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搜索结果: 1-9 共查到工学 Heterogeneous catalyst相关记录9条 . 查询时间(0.075 秒)
Development of efficient, green and recyclable?heterogeneous catalysts?for the chemical conversion of CO2?into cyclic carbonates with excellent yields under atmospheric pressure condition is still a v...
A mild, effective, and selective procedure is reported for the mono N-benzylation and N,N-dibenzylation of primary amines as well as mono N-benzylation of secondary amines using silica-supported coppe...
Rice husk ash was used as a new, green, and cheap adsorbent for FeCl3. Characterization of the obtained reagent showed that rice husk ash supported FeCl2·2H2O was formed. This reagent is efficient at ...
A novel, efficient, and environmentally friendly method for the synthesis of polyhydroquinoline derivatives by a one-pot, four-component unsymmetrical Hantzsch condensation of dimedone, aldehydes, eth...
Tetrabutylammonium hexatungstate, [TBA]2[W6O19], has been used as an efficient, inexpensive, and recyclable green catalyst for the one-pot three-component synthesis of 1,8-dioxodecahydroacridines by t...
An environmentally benign method for the synthesis of octahydro-quinazolin-2,5-diones by the reaction of aromatic aldehydes,dimedone, and urea in the presence of SiO2-NaHSO4 is reported. SiO2-NaHSO4 a...
A series of 1,4-dihydropyridines have been prepared by a one-pot condensation of aldehydes, ethyl acetoacetate, and ammonium acetate in the presence of a heterogeneous catalyst silica sulfuric acid at...
从非均相酸和碱催化转酯化反应的角度,综述了微波促进生物柴油制备的国内外研究进展。在微波辅助下非均相催化过程具有反应速率快、节能、环境友好、产物分离简便的优点。非均相催化剂以固体酸或者固体碱催化剂为主,反应在10~30min内完成,转化率与传统加热方式相当或者更高,所采用的固体催化剂具有可重复利用性。
Ozonolysis of triacylglycerol was carried out over heterogeneous catalysts. The triacylglycerol was decomposed to some compounds with low boiling points containing hydrocarbons, aldehydes, ketones, f...

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