Supercritical carbon dioxide: an inert solvent for catalytic hydrogenation?
作者： Marco Burgener , Davide Ferri , Jan-Dierk Grunwaldt , Tamas Mallat , Alfons Baiker
DOI: 10.1021/JP0521353
关键词:
摘要: Various surface species originating from the reaction between CO2 and H2 over Al2O3-supported Pt, Pd, Rh, Ru model catalysts were investigated by attenuated total reflection infrared (ATR-IR) spectroscopy under high-pressure conditions. Two different spectroscopic cells used: a variable-volume view cell equipped with ATR-crystal transmission IR windows (batch reactor) continuous-flow also element for ATR-IR spectroscopy. The study corroborated that CO formation dense in presence of hydrogen occurs all Pt-group metals commonly used heterogeneous catalytic hydrogenations supercritical (scCO2). In batch reactor cell, was detected on at 50 90 °C, highest rate Pt. Additional observed Pt/Al2O3 150 bar static It seems further is facilitated higher concentration pressure. continu...
acs.org
sci-hub.se 参考文章(51)
M. A. Vannice, S. Y. Wang, Determination of IR extinction coefficients for linear- and bridged-bonded carbon monoxide on supported palladium The Journal of Physical Chemistry. ,vol. 85, pp. 2543- 2546 ,(1981) , 10.1021/J150617A026
J.-D. Grunwaldt, U. Göbel, A. Baiker, Preparation and characterization of thin TiO2-films on gold/mica Fresenius Journal of Analytical Chemistry. ,vol. 358, pp. 96- 100 ,(1997) , 10.1007/S002160050354
I.A. Fisher, H.C. Woo, A.T. Bell, Effects of zirconia promotion on the activity of Cu/SiO2 for methanol synthesis from CO/H2 and CO2/H2 Catalysis Letters. ,vol. 44, pp. 11- 17 ,(1997) , 10.1023/A:1018916806816
Takanori Mizushima, Kazuyuki Tohji, Yasuo Udagawa, Akifumi Ueno, EXAFS and IR Study of the CO-Adsorption-Induced Morphology Change in Ru Catalysts Journal of the American Chemical Society. ,vol. 112, pp. 7887- 7893 ,(1990) , 10.1021/JA00178A006
Utpal K. Singh, M. Albert Vannice, Liquid-Phase Hydrogenation of Citral over Pt/SiO2 Catalysts: I. Temperature Effects on Activity and Selectivity Journal of Catalysis. ,vol. 191, pp. 165- 180 ,(2000) , 10.1006/JCAT.1999.2803
Shin-Ichiro Fujita, Nobutsune Takezawa, Difference in the selectivity of CO and CO2 methanation reactions Chemical Engineering Journal. ,vol. 68, pp. 63- 68 ,(1997) , 10.1016/S1385-8947(97)00074-0
Toshiaki Ohtani, Jun Kubota, Akihide Wada, Junko N. Kondo, Kazunari Domen, Chiaki Hirose, IRAS and TPD study of adsorbed formic acid on Pt(110)-(1 × 2) surface Surface Science. ,vol. 368, pp. 270- 274 ,(1996) , 10.1016/S0039-6028(96)01061-8
Jie Ke, P. J. King, Michael W. George, Martyn Poliakoff, Method for Locating the Vapor−Liquid Critical Point of Multicomponent Fluid Mixtures Using a Shear Mode Piezoelectric Sensor Analytical Chemistry. ,vol. 77, pp. 85- 92 ,(2005) , 10.1021/AC048970I
Zissis Dardas, Murat G. Süer, Yi H. Ma, William R. Moser, High-Temperature, High-Pressurein SituReactionMonitoring of Heterogeneous Catalytic Processes underSupercritical Conditions by CIR-FTIR Journal of Catalysis. ,vol. 159, pp. 204- 211 ,(1996) , 10.1006/JCAT.1996.0079
F SOLYMOSI, Surface interaction between H2 and CO2 over palladium on various supports Journal of Catalysis. ,vol. 95, pp. 567- 577 ,(1985) , 10.1016/0021-9517(85)90135-6