The results showed that, both diene and alkaline nitrogen-containing compounds had negative influence on the aromatization stability of the catalyst.

用小型固定床加壓反應(yīng)器研究了液化石油氣（C4 LPG）中的丁烯在納米ZSM-5型催化劑DLG-1上的低溫芳構(gòu)化反應(yīng)，重點考察了原料中二烯烴和堿性氮雜質(zhì)欧美性逼，以及反應(yīng)溫度一级免费看、壓力和C4 LPG進料重量空速條件對催化劑芳構(gòu)化反應(yīng)活性及穩(wěn)定性的影響。

A new recovery technology of solid waste was made which is from furfuryl alcohol production by furfural hydrogenization. When the solid waste is placed in a vacuum drying box, and is under lower negative pressure and at 130℃, the organic materials in solid waste can be distilled and then returned to the refining workshop to produce qualified furfuraldehyde and furfuryl alcohol. The remainder is mixed with soda ash and roasted in a reverberating furnace. The sodium chromate can be obtained by leaching. Rough cupric oxide is dissolved in nitric acid and cupric nitrate is obtained. A new catalyst was prepared by the above sodium chromate and cupric nitrate and used in furfuryl alcohol production.

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Therelationship of the amount of catalyst and the ee% of product was seen to be negative nonlin-ear. Catalyst 3 was used in the enantioselective addition of diethylzinc to aromatic aldehydesand gave good results. The configuration of products was determined by the configuration ofthe catalysts' chiral carbon linked with hydroxy group. Using β- amino alcohols bearing only one chiral center as catalysts for the enantiose-lective addition were studied. D-N, N-dialkyl-2-amino butanol gave poor catalytic effect be-cause of their structure. The configuration of the product is the same as the catalyst. Anotherkind of β- amino alcohols - phenylglycine derivatives and valine derivatives have chiralcenter on the carbon linked with amino group. Catalyzed by-phenylglycine derivatives 6,7, 9, 10, the reactions gave satisfied results. The optical yields exceeded 80%.

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By comparing the dehydration methods of three catalytic esterification reactions and the catalysts used under negative pressure, the better method of synthesizing 2 ethylhexyl chloroacetate is using stannous oxide as catalyst under negative pressure.

通過對三種催化酯化反應(yīng)的脫水方法及負(fù)壓下使用不同催化劑的比較和選擇中文字幕毛片网址，提出了以氧化亞錫為催化劑負(fù)壓脫水合成氯乙酸2乙基己酯的方法A片免费黄色录像。

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