张文郁,郭君文,董庆年,王谋华,魏伟,孙予罕.环氧丙烷在金属氧化物表面上吸附的IR研究[J].分子催化(中英文),2006,(1):70-72
环氧丙烷在金属氧化物表面上吸附的IR研究
Infrared Studies of Propylene Oxide Absorbed on Metal Oxides
投稿时间:2004-12-12  修订日期:2005-04-04
DOI:
中文关键词:  环氧丙烷,MgO,ZnO,Al2O3,IR,吸附态
英文关键词:Propylene oxide,MgO,ZnO,Al_(2)O_(3),IR,adsorbed state
基金项目:国家自然科学基金(20446003),教育部博士点专项基金(20030056035)
张文郁  郭君文  董庆年  王谋华  魏伟  孙予罕
中国科学院山西煤炭化学研究所煤转化国家重点实验室 山西太原030001(张文郁,董庆年,王谋华,魏伟,孙予罕)
,肥城阿斯德化工有限公司 山东肥城271600(郭君文)
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中文摘要:
      环氧丙烷(PO)是一种重要的化工原料,可用于合成多种特殊化学品及材料[1].其中在某些化学品合成过程中,经常以均相酸或碱作催化剂,例如在合成有机溶剂丙二醇醚的过程中就用到了矿物酸或苛性碱.虽然均相酸或碱作催化剂有活性高、选择性好等优点,但同时存在产物与催化剂分离、腐蚀和废液处理等多种弊端,因此在一些反应过程中人们正积极探求用符合要求的多相催化法来代替均相催化法.A l2O3、ZnO和MgO分别具有酸性、两性和碱性并已用于多种催化反应中[2,3],本文通过IR光谱法研究了环氧丙烷在MgO,A l2O3和ZnO上的吸附活化态.在这些氧化物中…
英文摘要:
      The adsorbed state of propylene oxide on MgO,ZnO and Al_(2)O_(3)were studied by IR spectroscopy.The IR results of PO adsorbed on MgO showed the appearance of 3 080 cm~(-1)and 1 644 cm~(-1)characteristic adsorption bands,which attribute to alkylene species,and the epoxide ring of propylene oxide was preferentially opened at O-C(1) bond.PO adsorbed on Al_(2)O_(3)showed the appearance of 1106cm~(-1)peaks,which attribute to C-O stretching vibration,and the epoxide ring was preferentially opened at O-C(2) bond.The adsorbed species formed on MgO and Al_(2)O_(3)had the stability to some extent.The results of PO adsorbed on ZnO showed no chemical absorption occuring on ZnO suface.
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