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• 2018-12-13 18:21發(fā)布了問答

  化學(xué) 自然界中的水經(jīng)過吸附 過濾等凈化后就可以直接飲用嗎?為什么

  　

  326人看過

• 2018-11-19 10:17發(fā)布了問答

  3歲孩子語言發(fā)育遲緩能能治好嗎？

  發(fā)育遲緩語言發(fā)育遲緩、【祛癱醒腦湯】智力發(fā)育遲緩、腦發(fā)育遲緩、生長發(fā)育遲緩、運(yùn)動(dòng)發(fā)育遲緩精細(xì)動(dòng)作是指手和手指的動(dòng)作以及手眼協(xié)調(diào)能力，如抓放、手指對(duì)捏、模仿畫畫、剪貼、折疊... 發(fā)育遲緩 語言發(fā)育遲緩、【祛癱醒腦湯】智力發(fā)育遲緩、腦發(fā)育遲緩、生長發(fā)育遲緩、運(yùn)動(dòng)發(fā)育遲緩 精細(xì)動(dòng)作是指手和手指的動(dòng)作以及手眼協(xié)調(diào)能力，如抓放、手指對(duì)捏、模仿畫畫、剪貼、折疊、書寫等等。如果一個(gè)兒童動(dòng)作發(fā)育比正常同齡兒童晚4-5個(gè)月，則其可能存在運(yùn)動(dòng)發(fā)育遲緩的問題。 展開

  362人看過

• 2017-09-22 01:00發(fā)布了問答

  GB/T8074-2008 水泥比表面積測(cè)定方法 勃氏法

  GB/T8074-2008 水泥比表面積測(cè)定方法 勃氏法講的是什么？

  483人看過

• 2017-01-12 21:40發(fā)布了問答

  燒結(jié)過程中為什么比表面積會(huì)變小

  　

  488人看過

• 2016-12-01 16:38發(fā)布了問答

  溶液吸附法測(cè)定活性炭的比表面積實(shí)驗(yàn)誤差在哪兒

  　

  835人看過

• 2016-04-21 06:35發(fā)布了問答

  接觸角和表面張力有沒有定量的關(guān)系

  　

  317人看過

• 2014-10-29 00:13發(fā)布了問答

  活性炭的強(qiáng)吸附性能和什么有關(guān)？

  　

  456人看過

• 2014-01-02 23:05發(fā)布了問答

  炭黑的吸碘值和比表面積是什么關(guān)系，正比還是反比，Thank you!

  　

  783人看過

• 2011-05-04 20:23發(fā)布了問答

  汽車燃油蒸汽回收系統(tǒng)

  　

  682人看過

• 2010-11-30 12:55發(fā)布了問答

  阿爾奇公式中的a b m n 如何求

  　

  363人看過

• 2008-05-05 20:57發(fā)布了問答

  尋求高手翻譯有機(jī)化學(xué)英語論文??！

  Abstract In this work， the effects of the microporosity and chemical surfaceof polymeric adsorbents on adsorptive properties of phenol wereinvestigated. Textural parameters of four kinds of polymeric resins， namely AB-8， D4006， NKA-II and ... Abstract In this work， the effects of the microporosity and chemical surfaceof polymeric adsorbents on adsorptive properties of phenol wereinvestigated. Textural parameters of four kinds of polymeric resins， namely AB-8， D4006， NKA-II and D16 resin， were separately measuredby ASAP 2010. The surface chemistry of these polymeric resins was determined by means of inverse gaschromatography (IGC) and diffusereflectance infrared Fourier transform spectroscopy (DRIFTS). Static equilibrium adsorption experiments were carried out to obtain theisotherms of phenol on the polymeric resins. It was shown that NKA-II and AB-8 resin possessed relatively high BET surface areas andmicropore volumes， while D4006 and D16 resin possessed comparatively low BET surface areas and micropore volumes. The results of IGCexperiments revealed that NKA-II resin had extraordinary high specific component of the free energy of adsorption both for polar acetone andbenzene probe， and thus extraordinary strong surface polarity compared to the other polymeric resins. It was also found that the isotherm ofphenol on NKA-II was much higher than that on the other polymeric resins due to its strongest surface polarity and largest micropore volumeamong four kinds of resins. These experimental observations indicated that adsorption of phenol on the polymeric resins depended greatly ontheir microporosity and surface chemistry. The well-developed microporosity and the strong surface polarity would improve the adsorptionof phenol on the polymeric resins. 2004 Elsevier B.V. All rights reserved. Keywords: Polymeric resin; Phenol; Porosity; Surface chemistry; Inverse gas chromatography 在線等答案，翻譯好的加分?。?！ 展開

  318人看過