求翻譯 關(guān)于光催化劑的科研文章
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求 對(duì)下段文字的英語(yǔ)翻譯： 本研究主要采用改良的溶膠凝-膠法制備納米級(jí)的二氧化鈦光催化劑，有別于一般制備二氧化鈦的溶膠凝膠過(guò)程，實(shí)驗(yàn)利用冰醋酸和正丁醇發(fā)生酯化反應(yīng)產(chǎn)生的水與鈦酸丁酯進(jìn)行水解反應(yīng)。另外冰乙酸具有螯合物的功能，可以降低金屬醇鹽的高... 求 對(duì)下段文字的英語(yǔ)翻譯： 本研究主要采用改良的溶膠凝-膠法制備納米級(jí)的二氧化鈦光催化劑，有別于一般制備二氧化鈦的溶膠凝膠過(guò)程，實(shí)驗(yàn)利用冰醋酸和正丁醇發(fā)生酯化反應(yīng)產(chǎn)生的水與鈦酸丁酯進(jìn)行水解反應(yīng)。另外冰乙酸具有螯合物的功能，可以降低金屬醇鹽的高水解速度，避免快速沉淀的產(chǎn)生而制備出均相二氧化鈦溶膠。溶膠經(jīng)干燥、煅燒得納米二氧化鈦粉體。 同時(shí)通過(guò)負(fù)載金屬元素Fe和非金屬元素N對(duì)二氧化鈦催化劑表面進(jìn)行改性，提高其催化活性，并對(duì)其催化活性進(jìn)行XRD、TG/DTG/DSC、BET等各項(xiàng)表征，選出催化效果較佳的光催化材料進(jìn)行CO2光催化還原反應(yīng)，把CO2轉(zhuǎn)化為有用的有機(jī)物甲醇，并從理論上探索CO2光催化反應(yīng)機(jī)理。 展開(kāi)
全部評(píng)論(2條)
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- 木塵宇 2010-06-05 00:00:00
- This research mainly adopts modified sol-gel preparation of nanometer level - glue of titanium catalysts， in light of the sol-gel preparation of titanium dioxide experiment using glacial acetic acid， gel process and n-buoh occur esterification reaction of water and butyl acetate titanate on hydrolysis reactions. Another ice acetic acid has chelates function， can reduce the high speed of alcohol salt， avoid fast hydrolysis of precipitation and the homogeneous tio2 sol-gel preparation. After drying， calcining sol-gel have nanometer tio2 power. And through the load metal elements of Fe and nonmetal N on the surface modification， titanium catalysts to improve its catalytic activity， and the catalytic activity of XRD， DSC and TG/respectively/the characterization， select BET catalytic effect better photocatalytic materials for CO2 photocatalytic reduction reaction， CO2 into useful organic methanol， and theoretically explores CO2 photocatalytic reactions mechanism. 望采納
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- DMN12369 2010-06-05 00:00:00
- 青島祥苑干燥劑為您服務(wù)！山東省Z大的干燥劑生產(chǎn)廠家！ This research mainly adopts modified sol-gel preparation of nanometer level - glue of titanium catalysts， in light of the sol-gel preparation of titanium dioxide experiment using glacial acetic acid， gel process and n-buoh occur esterification reaction of water and butyl acetate titanate on hydrolysis reactions. Another ice acetic acid has chelates function， can reduce the high speed of alcohol salt， avoid fast hydrolysis of precipitation and the homogeneous tio2 sol-gel preparation. After drying， calcining sol-gel have nanometer tio2 power. And through the load metal elements of Fe and nonmetal N on the surface modification， titanium catalysts to improve its catalytic activity， and the catalytic activity of XRD， DSC and TG/respectively/the characterization， select BET catalytic effect better photocatalytic materials for CO2 photocatalytic reduction reaction， CO2 into useful organic methanol， and theoretically explores CO2 photocatalytic reactions mechanism.
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- 求翻譯 關(guān)于光催化劑的科研文章
- 求 對(duì)下段文字的英語(yǔ)翻譯： 本研究主要采用改良的溶膠凝-膠法制備納米級(jí)的二氧化鈦光催化劑，有別于一般制備二氧化鈦的溶膠凝膠過(guò)程，實(shí)驗(yàn)利用冰醋酸和正丁醇發(fā)生酯化反應(yīng)產(chǎn)生的水與鈦酸丁酯進(jìn)行水解反應(yīng)。另外冰乙酸具有螯合物的功能，可以降低金屬醇鹽的高... 求 對(duì)下段文字的英語(yǔ)翻譯： 本研究主要采用改良的溶膠凝-膠法制備納米級(jí)的二氧化鈦光催化劑，有別于一般制備二氧化鈦的溶膠凝膠過(guò)程，實(shí)驗(yàn)利用冰醋酸和正丁醇發(fā)生酯化反應(yīng)產(chǎn)生的水與鈦酸丁酯進(jìn)行水解反應(yīng)。另外冰乙酸具有螯合物的功能，可以降低金屬醇鹽的高水解速度，避免快速沉淀的產(chǎn)生而制備出均相二氧化鈦溶膠。溶膠經(jīng)干燥、煅燒得納米二氧化鈦粉體。 同時(shí)通過(guò)負(fù)載金屬元素Fe和非金屬元素N對(duì)二氧化鈦催化劑表面進(jìn)行改性，提高其催化活性，并對(duì)其催化活性進(jìn)行XRD、TG/DTG/DSC、BET等各項(xiàng)表征，選出催化效果較佳的光催化材料進(jìn)行CO2光催化還原反應(yīng)，把CO2轉(zhuǎn)化為有用的有機(jī)物甲醇，并從理論上探索CO2光催化反應(yīng)機(jī)理。 展開(kāi)
2010-06-04 05:01:48
540
2
- 急求幫我翻譯一段電力專業(yè)英語(yǔ)文章?。?！
- What's therole of the Supercapacitor? The supercapacitor resembles a regular capacitorwith the exception that it offers very high capacitance in a small package.Energy storage is by means of static charge rather than of an electro-che... What's therole of the Supercapacitor? The supercapacitor resembles a regular capacitorwith the exception that it offers very high capacitance in a small package.Energy storage is by means of static charge rather than of an electro-chemicalprocess that is inherent to the battery. Applying a voltage differential on thepositive and negative plates charges the supercapacitor. This concept issimilar to an electrical charge that builds up when walking on a carpet. Thesupercapacitor concept has been around for a number of years. Newer designsallow higher capacities in a smaller size. Whereas a regular capacitor consists ofconductive foils and a dry separator， the supercapacitor crosses into batterytechnology by using special electrodes and some electrolyte. There are threetypes of electrode materials suitable for the supercapacitor. They are: highsurface area activated carbons， metal oxide and conducting polymers. The highsurface electrode material， also called Double Layer Capacitor (DLC)， is leastcostly to manufacture and is the most common. It stores the energy in thedouble layer formed near the carbon electrode surface. 展開(kāi)
2013-06-11 09:00:02
513
3
- 急求翻譯下面這段測(cè)繪工程方面的文章
- REAL-TIME KINEMATIC GPS Real-Time Kinematic (RTK) is Trimble Navigation's Site Surveyor System available as a standard option upgrade to Trimble's 4000 series SE and SSE receivers. The Medicine Bow National Forest uses 4000 SSE and SE rece... REAL-TIME KINEMATIC GPS Real-Time Kinematic (RTK) is Trimble Navigation's Site Surveyor System available as a standard option upgrade to Trimble's 4000 series SE and SSE receivers. The Medicine Bow National Forest uses 4000 SSE and SE receivers in it's Boundary Management program. The use of RTK enables a surveyor to determine a corner's position， establish a corner without having to make traditional corner moves or to mark and post line as quickly as the surveyor could walk， all without having to post-process the data. The surveyor using RTK can perform corner search within a meter or a couple of centimeters of the true location without the need to traverse down the line. For some survey applications traditional kinematic GPS field procedures are preferred， since many points can be observed in a short period of time with occupation times of a minute or less. However until now， kinematic surveying required post-processing before the results were available. This made field stakeout of corner positions， corner search， line marking and posting， and evaluation of coordinate accuracy in the field impossible to do using kinematic techniques (Curry et al 1993). Now， the use of RTK technology makes these impossible traditional kinematic tasks possible. What is RTK? RTK is currently carrier phase observations processed (corrected) in real-time resulting in position coordinates to a 1-2 centimeter accuracy level being available to the surveyor in the field. In other words， what the surveyor sees is what he gets. RTK， consists of two or more GPS receivers， three or more radio-modems， a "fixed-plate initializer" ， and a handheld survey data collector/computer (TDC1). In RTK， one receiver occupies a known reference station and broadcasts a correction message (Compact Measurement Record or CMR2) to one or more roving receivers. The roving receivers process the information to solve the WGS-84 vectors by solving the integers in real-time within the receiver to produce an accurate position relative to the reference station. Precision of RTK is +/-2 cm + 2 ppm， with 1 ppm equating to 1 mm per 1 km (Trimble Navigation， 1993). The TDC1 is used to graphically display the processed results of the surveyors current position on the ground at that moment. The TDC1 has the capability for the surveyor to navigate within a couple of centimeters to a known or unknown coordinate position using Local， State Plane or Geographic coordinates. In real-time positions may be logged in the field， inverses performed， attributes (features) recorded， azimuths and distances between points calculated， and corners located. RTK， as with traditional kinematic GPS procedures， currently requires continuous satellite lock to be maintained. This restriction allows for RTK to be most effective in a non-canopied， no obstructions environment. 展開(kāi)
2009-06-04 09:20:37
550
1
- 速求一篇關(guān)于紙與藝術(shù)品的文章
- 要1000字左右謝謝... 要1000字左右 謝謝 展開(kāi)
2018-11-12 14:42:29
313
0
- 高分求一篇關(guān)于傳感器應(yīng)用的物理文章
- 查閱資料，舉5個(gè)應(yīng)用傳感器研究物理問(wèn)題的實(shí)例。要求詳細(xì)記錄實(shí)驗(yàn)的目的、器材、方法和結(jié)論。 高一寒假作業(yè)，800字足矣。滿意的給300
2014-03-12 19:29:21
581
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- 關(guān)于納米技術(shù)的文章
- 關(guān)于納米技術(shù)的文章，不要有太多的學(xué)術(shù)性，但應(yīng)該值得一讀，Z好能配上推薦理由。
2007-01-06 20:46:18
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- 關(guān)于水污染文章
2014-12-21 20:36:59
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3
- 文章繼續(xù)求翻譯1，生物/英語(yǔ)達(dá)人來(lái)幫忙！
- Residues of malachite green (MG) were extracted from homogenized animal tissues with a mixture of McIlvaine buffer (pH 3.0)–acetonitrile， and purified over an aromatic sulfonic acid solid-phase extraction column followed by ... Residues of malachite green (MG) were extracted from homogenized animal tissues with a mixture of McIlvaine buffer (pH 3.0)–acetonitrile， and purified over an aromatic sulfonic acid solid-phase extraction column followed by HPLC or LC–ESI-MS–MS analysis. Ascorbic acid and N，N，N9，N9-tetramethyl-1，4-phenylenediamine dihydrochloride were added to reduce de-methylation of the dye. Responses were recorded at 620 nm (HPLC) or by multiple-reaction-monitoring (LC–MS–MS) after post-column oxidation using PbO2 . MG and its primary metabolite leuco-malachite green (LMG) were successfully determined at 2.5–2000 mg / kg in catfish， eel， rainbow trout， salmon， tropical prawns and turbot， with a limit of detection at 1 mg / kg (HPLC) and 0.2 mg / kg (LC–MS–MS) for both MG and LMG. Recoveries for LMG were between 86±15% (prawn) and 105±14% (eel). Freeze–thawing cycles， and storage at 4°C and -20°C affected the recovery of both MG and LMG. Analyses of eel， trout and (processed) salmon field samples collected at local retailers， fish-market and -shops demonstrated trace levels of MG-residues. A McIlvaine solution at pH 3.0 was prepared by mixing 18.9 ml 0.2 M sodium hydrogen phosphate and 81.1 ml 0.1 M citric acid， whereas these volumes were 62.5 and 37.5 ml， respectively， to obtain a McIlvaine solution at pH 6.0. The SPE-eluent was prepared just before use and consisted of a mixture of 2.5 ml 25% (m/v) ammonium hydroxide， 2.5 ml 1.0 mg/ml methanolic ascorbic acid and 45 ml methanol. The sample-solvent was composed， just before use， from 2.5 ml 1.0 mg/ml methanolic ascorbic acid， 20 ml 50 mM sodium perchlorate containing 25 mM sodium acetate and 25 mM 1-pentanesulfonic acid adjusted to pH 4.0 with acetic acid， and 27.5 ml acetonitrile. Chemicals and solutions containing the dyes were protected from light. Fish were bought at the fish market and local stores. Blank trout were collected from aquaria at Utrecht University (The Netherlands). Tropical prawns were collected by the Dutch Inspectorate for Health Protection and Veterinary Public Health. 展開(kāi)
2008-03-26 21:06:11
877
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- 急求英語(yǔ)達(dá)人幫忙翻譯段文章，在線等謝謝
- The incorporation of silicon from the quartz-made growth chamber， characteristic of NIRIM-type reactor is insignificant in our samples， if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here)， wh... The incorporation of silicon from the quartz-made growth chamber， characteristic of NIRIM-type reactor is insignificant in our samples， if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here)， which supports the good quality of these films. The improvement of the crystalline quality of {111} films is explained by the weak ion bombardment of the sample during its growth outside the plasma ball. Raman measurements (not shown in this work) have also confirmed the high crystalline quality of our films， in particular in the low doping range. Very high boron concentrations (up to 5×1021 cm?3) have been reached at this growth position， outside the plasma ball. 展開(kāi)
2010-03-12 07:46:42
480
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- 關(guān)于蘇州市地表水水質(zhì)指標(biāo)的文章，誰(shuí)有啊???急求!!!!
2008-05-03 06:00:01
427
1
- 關(guān)于納米技術(shù)應(yīng)用的文章
- 字?jǐn)?shù)短一點(diǎn)，但要求能說(shuō)明納米 在線等哦!要快!
2018-11-28 10:21:08
334
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- 關(guān)于位移傳感器的英文文章
- 字?jǐn)?shù)在翻譯成中文后在3000左右的就好還有不要是別人翻過(guò)的Z好不要是pdf的(當(dāng)然實(shí)在沒(méi)好的也可以)如果好的話一定會(huì)追加更多分!!!... 字?jǐn)?shù)在翻譯成中文后在3000左右的就好 還有不要是別人翻過(guò)的 Z好不要是pdf的(當(dāng)然實(shí)在沒(méi)好的也可以) 如果好的話一定會(huì)追加更多分!!! 展開(kāi)
2009-06-16 04:48:11
521
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- 求翻譯。。。。。。。。。。。
- During the preparation of the nano-products， these nano-units， such as nanoparticles， nanoclusters， nanowires and nanorods， can also self-assemble into the novel structural aggregates by several routes， including electron irradiation deposi... During the preparation of the nano-products， these nano-units， such as nanoparticles， nanoclusters， nanowires and nanorods， can also self-assemble into the novel structural aggregates by several routes， including electron irradiation deposition [19]， chemical vapor deposition [20]， laser vaporization-condensation [21]， charge transferring [22]， an organic reagent-assisted method [23]， solution-liquid-solid method [24] and catalytic vapor-liquid-solid growth [25]. With these routes， various nanoscale or microscale aggregates can demonstrate novel architectures， including tree-like， web-like， spherical， nanowire-like， network and fishbone-like aggregates. As a well-known method for producing the nanocapsules， however， arc-discharge has been rarely used to synthesize the aggregates self-assembled by the nanocapsules prepared simultaneously in arc-discharge. Nevertheless， it is possible that the arc-discharge can be developed into a new way to synthesize the aggregates. In the present work， we utilized arc-discharge technique with modified strategies， involving changing the hydrogen pressure， introducing gadolinium - aluminum alloy ingot as the anode and adjusting the elements percent of the anode according to their evaporation pressure， to synthesize a new type of nanocapsules， with intermetallic compound GdAl2 as core and amorphous Al2O3 as shell， which enlarge the family of the magnetic nanocapsules. At the same time， the regularly aligned three-dimensional macro-aggregates self-assembled by the nanocapsules without any template and catalyst were simultaneously synthesized in arc-discharge process. 展開(kāi)
2008-06-09 10:41:10
400
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- 麻煩幫我翻譯以下文章(生物專業(yè)英語(yǔ))
- The most common means of agitation of liquid media is by placing the culture vessels on a drum(for test tubes)or a disk(for flasks)slowly rotating around a near horizontal axis. This assures good aeration of the liquid cultures with little... The most common means of agitation of liquid media is by placing the culture vessels on a drum(for test tubes)or a disk(for flasks)slowly rotating around a near horizontal axis. This assures good aeration of the liquid cultures with little mechanical damage to the cells.Agitation can also be achieved by placing culture flasks on reciprocating or gyrotory platform shakers.Gyrotoy (horizontal rotary orbit)shakers are preferred over reciprocating (horizontal linear motion)ones for a variety of reasons .The performance of the gyrotory shaker is determined by the speed of agitation and angle position of the flasks，with optimal aeration occurring in flasks tilted about 45° from the vertical.A new shaker design is the "tapping" motion shaker in which the culture is agitated by a magnetic bar moving up and down.This vertical movement of the bar is less injurious to cells than rotary movement of the bar at the bottom of the flask used in some conventional culture systems. 展開(kāi)
2008-05-30 20:14:03
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- 幫忙翻譯一哈文章（翻譯成英語(yǔ)）
- 摘 要 本文采用環(huán)氧氯丙烷、乙二胺、對(duì)氨基苯磺酸等物質(zhì)合成了一種新的活性染料耐氯水牢度提升劑，并對(duì)經(jīng)多種類型活性染料染色的織物進(jìn)行固色處理，再進(jìn)行氯漂處理。經(jīng)過(guò)對(duì)織物K/S值、Z大吸收波長(zhǎng)λmax、摩擦牢度及皂洗牢度的分析，確定提升劑處理的Z佳工... 摘 要 本文采用環(huán)氧氯丙烷、乙二胺、對(duì)氨基苯磺酸等物質(zhì)合成了一種新的活性染料耐氯水牢度提升劑，并對(duì)經(jīng)多種類型活性染料染色的織物進(jìn)行固色處理，再進(jìn)行氯漂處理。經(jīng)過(guò)對(duì)織物K/S值、Z大吸收波長(zhǎng)λmax、摩擦牢度及皂洗牢度的分析，確定提升劑處理的Z佳工藝。實(shí)驗(yàn)表明:織物的K/S值有很大的提高，織物的耐氯牢度大致可提升2～3級(jí)，并且不會(huì)改變織物色光。但是提升劑對(duì)色織物的摩擦牢度和皂洗牢度影響不是很大。 關(guān)鍵詞：活性染料；耐氯色牢度；提升劑；染色工藝 展開(kāi)
2008-05-28 14:59:35
501
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- 誰(shuí)能幫我翻譯下這片文章？翻譯的好的在追加100分?。?！
- Experimental Method All experiments were carried out in a high-pressure CO2 apparatus (Speed-SFE from Applied Separations) (see Figure 1) with a 300-mL extractor designed for a maximum pressure of 690 bar and a maximum temperature of 2... Experimental Method All experiments were carried out in a high-pressure CO2 apparatus (Speed-SFE from Applied Separations) (see Figure 1) with a 300-mL extractor designed for a maximum pressure of 690 bar and a maximum temperature of 250 °C. The volume of the extractor had to be reduced to 50 mL by a metallic cylinder， which tightens to the extractor wall， because as preliminary tests showed the equilibrium cell has to be completely filled with material. Otherwise， diffusion is the limiting factor and time for reaching equilibrium was too long. The extraction vessel was filled with compressed CO2 by an air-driven pump at closed outlet valves and under static conditions， which means desired pressure and temperature; the cell was incubated for 15 h， maintaining these conditions to reach equilibrium. In preliminary experiments the equilibrium time of 15 h was determined to reach equilibrium. CO2 Sampling. At equilibrium a CO2 phase sample is taken by opening the outlet valve and expanding a certain amount of CO2-substance mixture into a cooling trap filled with toluene， which has the highest solubility for the measured substances under atmospheric conditions. The pure gaseous CO2 passes a rotameter， showing the actual flow rate， and a gas flowmeter for determining the expanded CO2 amount. The content of the cooling trap was filled up with toluene to 30 mL and analyzed by a gas chromatographic method using an electron capture detector (GC-ECD). With the mass of expanded CO2 and composition of the cooling trap solubility at a certain pressure and temperature was calculated. Sampling was repeated four times at a given pressure and temperature and the standard deviation was lower than 5%. Gas Chromatographic Method. The tolueneflame retardant mixture of CO2 sampling was analyzed in a gas chromatograph (HP 5890 Serie II) with an ECD using a capillary column (type HP-1， 12 m 0.2 mm 0.2 ím). The injector temperature was held constant at 290 °C and the detector temperature at 300 °C. The oven temperature was held constant at 290 °C. Calibration with different amounts of HBCD and TBBA in toluene has been done before determining the linear range of calibration line and retention time of substances 展開(kāi)
2008-06-04 17:17:07
589
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- 有沒(méi)有關(guān)于污水描寫(xiě)的文章
2006-03-28 16:21:21
461
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- 有哪些關(guān)于仿生學(xué)的文章
2011-03-25 23:34:39
540
1
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