Advances in the Catalysts and Mechanism for Ammonia Synthesis

通讯联系人：廖代伟[中文摘要]本文综述了氨合成这一最重要的工业多相催化过程８０ 多年来的研究进展。介绍了氨合成熔铁催化剂、氨合成钌催化剂的发展以及对氨合成催化反应机理的不同看法。[英文摘要]The advances in ammonia synthesis as is one of the most important industrial heterogeneous catalytic processes are reviewed. The developments of both fused iron catalysts and ruthenium catalysts and the different opinions on catalytic mechanism for ammonia synthesis are discussed.国家自然科学基金;固体表面物理化学国家重点实验室和福建炼油厂资

PREPARATION AND APPLICATION of WATER SOLUBLE AMINOPHSOPHINE LIGANDS

本文简要叙述了通过胺膦配体中的活泼氨基引入各种极性基团 ,制备水溶性胺膦配体的方法及其在不对称催化中的应用The aminophonphine ligands display important role in coordination and under homogeneous catalysis.Recently,an increasing interest has been directed to water soluble aminophosphine ligands.This review discribes briefly the preparation of various water soluble aminophosphine ligands in which polar functional groups were introduced by active hydrogen on nitrogen atom and their application in homogeneous catalysis or catalytic asymmetric synthesis

STUDIES ON CATALYTIC ETHERIFICATION of ISOPENTENE

为了适应环保的要求，世界各国已纷纷明令不准使用含铅汽油，而代之以掺有汽油添加剂的无铅汽油，汽油添加剂主要是一些含氧有机化合物。醚类具有可替代汽油组份、不溶于水、调合辛烷值高、蒸气压低和不污染环境等优点，适合作为汽油添加剂。目前已开发了甲基叔丁基醚（M...The etherification of isopentene by catalyst,benzol sulfonic acid cation exchange resin,has been studied.The results indicats that the resin is an effective catalyst with total conversion of over 97% at 55℃ to 70℃ and CH 3OH/C 5=1.2.The influences of temperature,pressure and CH 3OH/C 5 ratio have also been investigated.国家自然科学基金;固体表面物理化学国家重点实验室;福建炼油厂资

Quantum Chemical Study of Chemisorption States For Oxygen on Alkali Metal Oxides and SulFides

碱金属氧化物和硫化物晶面上氧吸附态的量子化学研究＠戴玉梅＠林银钟＠陈鸿博＠洪琦＠易军＠陈守正＠廖代伟￥福建师范大学化学系￥厦门大学物理化学研究所￥厦门大学化学系￥固体表面物理化学国家重点实验室碱金属氧化物和硫化物晶面上氧吸附态的量子化学研究戴玉梅1林银钟2...The Chemisorption States For O_2 on (100), (110) and (111) surFaces of Li_2O, Li_2S, Na_2O and Na_2S with the Flat-lying model, inclined model and vertical model are studied by CNDO/2LMO.The calculations indicated that, in energy, the (100) surFace and Flatlying model are the most Favorable while the chemisorbed O_2 is excitation state.The results also showed that the decrease in cation radius is in Favor of both chemisorption and activation of oxygen.国家自然科学基金;福建炼油厂资

The Effect of Supporters and Ruthenium Contents on the Reaction Activity for Ammonia Synthesis

传统的熔铁型合成氨催化剂的使用条件相当苛刻（450℃，1.5~3.5x105PA），近20年来国外一直致力于开发温和条件下使用的钌基合成氨催化剂［1，2］，并已取得了相当的进展［3］，可望在不久的将来完全实现工业化，代替铁基合成氨催化剂，成为一种高效...The effects of different supporters, such as active carbon, γ Al 2O 3、NaX molecular sieve, silica gel, Sm 2O 3, CeO 2, Y 2O 3 and C 60 (6%), and contents (2%￣6%) of ruthenium on reaction activity of ruthenium based catalysts for ammonia synthesis have been studied.The activity for ammonia synthesis of Ru based catalysts supported by different supporters decreased in the sequence of C 60 >Sm 2O 3>CeO 2>Y 2O 3>γ Al 2O 3>NaX>AC>silica gel, and the optimum content of ruthenium is 4 %, under 1×10 5 Pa; the Ru K/C 60 catalyst has the highest activity for ammonia synthesis at 350 ℃.Also, the Ru based catalysts have been characterized by SEM.国家自然科学基金;固体表面物理化学国家重点实验室资

Synthesis and Hydrogenation Activity of Diiminodiphosphine Ruthenium Complex RuCl 2P 2N 2

ruCl2（PH3P）4或ruCl2（dMSO）4在甲苯中直接与等摩尔的亚胺膦配体n，n-双-［邻-（二苯基膦苯亚甲基）］乙二胺（P2n2）在甲苯中回流反应，高产率地合成了反式配位的双亚胺双膦钌配合物TrAnS-ruCl2P2n2.在温和条件下，该配合物作为新型催化剂有效地催化α，β-不饱和酸和几种功能团烯烃的选择加氢反应.讨论了可能的催化活性物种.The trans Form of the title complex was synthesized in high yield by interaction of equimole RuCl 2(Ph 3P) 4 or RuCl 2(DMSO) 4 (DMSO=dimethylsulFoxide) with P 2N 2 (i.e.= N,N bis[ o (diphenylphosphine benzylidene)]ethylene diamine) in reFluxing toluene.The complex has been investigated as catalyst For selective hydrogenation of α,β unsaturated acids and some Functionalized oleFins.The hydrogenation catalytic activity was observed as Follows: styrene>acrylic acid>benzaldehyde>salicyl aldehyde>cyclohexanone>FurFural>methylacrylic acidacetophenone.The eFFect of addition of NH 4PF 6 or AgNO 3 as promotor has also been studied.国家教育委员会留学回国人员资