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Aldol condensations of a variety of different aldehydes and ketones under ultrasonic irradiation using poly(N-vinylimidazole) as a new heterogeneous base catalyst under solvent-free conditions in a liquid-solid system Nader Ghaffari Khaligha, Taraneh Mihankhahb（图）
Ultrasound-assisted reaction Liquid-solid system Poly(N-vinylimidazole) Aldol condensation, Solvent-free
2013/12/5
An ultrasound-assisted aldol condensation reaction has been developed for a range of ketones with a variety of aromatic aldehydes using poly(N-vinylimidazole) as a solid base catalyst in a liquid-soli...
Synthesis of Poly[(3-(6-(9-anthracenylmethoxy)hexyl)thiophene)-co-(3-(6-bromohexyl)thiophene)] Postfunctionalized from Poly(3-(6-bromohexyl)thiophene): A Comparative Study of the Base Polymer with Its Chlorinated Analogous
Poly[(3-(6-(9-anthracenylmethoxy)hexyl)thiophene)-co-(3-(6-bromohexyl)thiophene)] Poly(3-(6-bromohexyl)thiophene) Chlorinated Analogous
2009/9/2
A synthetic method based on the postfunctionalization of a reactive homopolymer precursor, which allows for the preparation of different copolymers derived from poly(3-alkylthiophene), was studied. Al...
一种新的低温苯加氢催化剂Ru(Schiff-base)金属配合物, 通过自由配体法封装于Y型沸石的孔腔中。使用XRD、N2吸附、FT-IR、DRS、DTA对催化剂进行表征。结果表明, 复合催化剂中希夫碱(Schiff-base)配体改变了中心离子的电子结构，使其更容易与反应物分子形成配位过渡态，络合活化的反应物分子更容易转化为产物。与离子交换法制备的母体Ru/Y相比，对纯苯的催化加氢性能明显提高。...
Effect of Operating Variables on Regeneration of Base-Oil from Waste Oil by Conventional Acid-Clay Method
Waste Oil Regeneration Base-oil
2010/9/14
Lubricating oil requirement is increasing day by day with the establishment of new industries, increase in number of vehicular transports and mechanization of agriculture. Generated waste oil can be c...
期刊信息
篇名
On-line sequential preconcentration of inorganic anions by anion-selective exhaustive injection and base-stacking in capillary zone electrophoresis
语种
英文
撰写或编译
撰写
作者
Zhang Z X,He Y Z*,Hu Y Y
第...