在负载铼催化剂上由CO_2/H_2合成甲醇的研究  

Studies on Methanol Synthesis from CO_2+H_2 over Supported Rhenium Catalysts

作　　者：李凯[1] 徐征[1] 千载虎[1] 

机构地区：[1]吉林大学化学系

出　　处：《高等学校化学学报》1989年第2期214-217,共4页Chemical Journal of Chinese Universities

摘　　要：CO加H_2合成甲醇的工作已应用于工业化生产,其中多采用锌、铬、铜基催化剂。而CO_2加H_2合成甲醇研究工作尚不很多,其催化剂多数是在CO/H_2制甲醇催化剂基础上发展而来,主要有Cu/ZnO、Cu/Al_2O_3、Cu-Zn/Al_2O_3、ZnO/Cr_2O_3/SiO_2/Al_2O_3及Pd附载催化剂。对于反应机理,有人认为CO_2首先与H_2反应,经CO生成甲醇。Methanol formation in the reactions of CO2+H2 in a flow reactor under 5 atmospheric pressure over Re catalysts supported on a series of oxides (SiO2, TiO2, Nb2O5, γ-Al2O3, La2O3, CeO2, ZrO2) was studied. Among the catalysts used, Re/ZrO2, Re/CeO2 and Re/La2O3 showed an excellent activity and selectivity toward methanol at a mild reaction condition. XPS and FT-IR were used to characterize Re/X(X = ZrO2, CeO2. γ-Al2O2) and study the absorbed states of CO2/H2 over Re/ZrO2 and Re/CeO2. The Mechanism of methanol formation over Re/ZrO2 and Re/CeO2 was discussed.

关 键 词：铼催化剂 甲醇 合成 CO2 H2 

分 类 号：TQ223.121[化学工程—有机化工]