HPLC was coupled with both mass spectroscopy and ultraviolet absorption spectroscopy for simultaneous separation and characterization of the products from glow plasma reaction of chloroform.(3) Phosphorus pentachloride has been used to perchlorinate acenaphthene under moderate pressure and temperature in sealed reaction vessels.

在此基礎(chǔ)上全网男人的天堂网站，以反相C〓柱為固定相色色亚洲视频，甲醇/乙醇/環(huán)己烷為流動相，采用梯度洗脫的方法人人插人人操人人摸，對氯仿輝光放電合成產(chǎn)物進(jìn)行高效液相色譜-紫外光譜-質(zhì)譜聯(lián)用分離分析www.99riav.com-，成功的分離得到包括富勒烯C〓和全氯代碳簇在內(nèi)的數(shù)十種產(chǎn)物，并得到了相應(yīng)的質(zhì)譜和光譜數(shù)據(jù)大学生女毛片在线现观看。

The selective oxidation of propane to acrolein is an important reaction for the utilization of light alkanes.

丙烷選擇氧化制丙烯醛是低碳烷烴優(yōu)化利用的一個重要反應(yīng)国产.www。

In addition, the effect of different olefins on alkylation reaction was also investigated.

另外，還考察了烯烴碳鏈長度對苯烷基化反應(yīng)的影響91自拍视频国产。

These ligands were found to be very effective in construction of quaternary carbon centers by using asymmetric allylic alkylation.

這類配體在前手性親核試劑的不對稱烯丙基化構(gòu)筑手性季碳中心的反應(yīng)中色哟哟网址，顯示了較好的反應(yīng)活性及對映選擇性亚洲免费视频二。

The ligands were found to be effective in palladium-catalyzed asymmetric allylic alkylation to construct chiral quaternary carbon center.

這類配體在前手性親核試劑的不對稱烯丙基化構(gòu)筑手性季碳中心的反應(yīng)中3344300部，顯示了較好的反應(yīng)活性及對映選擇性亚洲黑人欧美在线黄片。

This paper studied some of the highlights in the progress of the research of carbapenem antibiotics, designed and mainly synthesized branched chain intermediate of biapenem.

本課題概述了碳青霉烯類抗生素的研究進(jìn)展，并設(shè)計(jì)合成了比阿培南的側(cè)鏈中間體免费下载一级大黄片视频。

The production of value-added products based on butene oligomerization is one of the effective ways to improve the comprehensive utilization of four carbon fraction.

以丁烯齊聚為基礎(chǔ)生產(chǎn)高附加值產(chǎn)品是提高碳四餾分化工綜合利用率日韩欧美一级A片免费观看，為企業(yè)挖潛增效的有效途徑之一。

The quality of butadiene product could meet the process demand of next working procedure and raffinate C4 could meet the technical demand of 1 - butylene and MTBE plant through technical remoulding and optimization.

在實(shí)際生產(chǎn)運(yùn)行過程中国内大量揄拍18人妻精品视频，通過技術(shù)改造與優(yōu)化欧美一级婬片A片久久精品mm，產(chǎn)品丁二烯能夠滿足下游工序生產(chǎn)要求，副產(chǎn)抽余碳四的質(zhì)量能夠滿足1-丁烯和MTBE裝置的技術(shù)要求欧美乱妇高清免费99。

An ester or a salt of perchloric acid .relating to or producing butyric acid .

順丁烯二酸氧化形成的酸（如在脂肪和碳水化合物的新陳代謝中）西欧免费人人操,人人爽。

The triple bond does not usually react so vigorously at a carbon-carbon double bond .

三鍵在反應(yīng)時一般不象烯烴中的碳-碳雙鍵那樣劇烈。