期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
碳酸酯类合成路线研究进展、碳酸酯类的应用
1
作者 赵化龙 吕龙辉 《石油石化物资采购》 2024年第12期238-240,共3页
此次重点综述了均相催化剂(包括金属基和有机基络合物)以及二氧化碳基嵌段共聚物和功能聚碳酸酯制备的最新进展。
关键词 碳酸酯类合成 乙氧基化反应 酯交换反应 催化碳酸酯化反应 生物质基碳酸酯合成 应用领域
下载PDF
Synthesis of Diphenyl Carbonate over the Magnetic Catalysts Pd/La_(1-x)Pb_xMnO_3 (x=0.2-0.7) 被引量:3
2
作者 鲁威 杜治平 +2 位作者 袁华 田琦峰 吴元欣 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2013年第1期8-13,共6页
The magnetic perovskite-supported palladium catalysts Pd/Lal_xPbxMnO3 (x = 0.2-0.7) were prepared and used for the oxidative carbonylation of phenol to diphenyl carbonate. The synthesized catalysts were characterize... The magnetic perovskite-supported palladium catalysts Pd/Lal_xPbxMnO3 (x = 0.2-0.7) were prepared and used for the oxidative carbonylation of phenol to diphenyl carbonate. The synthesized catalysts were characterized by the X-ray diffraction (XRD), surface area measurement BET, vibration sample magnetometer (VSM) and tem- perature-programmed reduction (TPR). The experimental results demonstrated that the magnetic Pd/La1-xPbxMnO3 (x = 0.4-0.5) obtain relative better catalytic activity. It can be explained by higher concentration of oxygen vacan- cies, larger amount and better mobility of lattice oxygen of their support. Furthermore, these samples possess suffi- cient saturated magnetization. Thus, Pd/La1-xPbxMnO3 (x = 0.4-0.5) may be suitable for operation in the magneti- cally stabilized bed reactor. 展开更多
关键词 diphenyl carbonate perovskite-type oxides magnetic catalyst magnetically stabilized bed reactor
下载PDF
An efficient catalytic system for the synthesis of glycerol carbonate by oxidative carbonylation of glycerol 被引量:5
3
作者 WANG LiYan LIU Yan +2 位作者 LIU ChunLing YANG RongZhen DONG WenSheng 《Science China Chemistry》 SCIE EI CAS 2013年第10期1455-1462,共8页
Glycerol carbonate was synthesized by the oxidative carbonylation of glycerol catalyzed by the commercial Pd/C with the aid of NaI. High conversion of glycerol (82.2%), selectivity to glycerol carbonate (〉99%), a... Glycerol carbonate was synthesized by the oxidative carbonylation of glycerol catalyzed by the commercial Pd/C with the aid of NaI. High conversion of glycerol (82.2%), selectivity to glycerol carbonate (〉99%), and TOF (900 h-1) were obtained under the conditions of 5 MPa (Pco:Po2 = 2:1), 140 C, 2 h. The highly active palladium species were generated in situ by dissolution from the carbon support and stabilized by re-deposition onto the support surface after the reaction was finished. Palladium dissolution and re-deposition were crucial and inherent parts of the catalytic cycle, which involved heterogeneous reactions. This Pd/C catalyst could be recycled and efficiently reused for four times with a gradual decrease in activity. Moreover, the in- fluences of various parameters, e.g., types of catalysts, solvents, additives, reaction temperature, pressure, and time on the conversion of glycerol were investigated. A reaction mechanism was proposed for oxidative carbonylation of glycerol to glyc- erol carbonate. 展开更多
关键词 GLYCEROL glycerol carbonate oxidative carbonylation Pd/C catalyst
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部