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Silica Immobilized Ruthenium Catalyst for Formic Acid Synthesis from Supercritical Carbon Dioxide Hydrogenation II: Effect of Reaction Conditions on the Catalyst Performance
Author(s) -
YingMin Yu,
YiPing Zhang,
JinHua Fei,
XiaoMing Zheng
Publication year - 2005
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200590977
Subject(s) - chemistry , catalysis , ruthenium , formic acid , supercritical fluid , supercritical carbon dioxide , carbon dioxide , heterogeneous catalysis , inorganic chemistry , organic chemistry
The synthesis of formic acid from carbon dioxide and hydrogen using a silica immobilized ruthenium catalyst as precursor has been studied in different reaction conditions. The results revealed that the TOF (turn over frequency) of HCOOH achieved 1481.5 h ‐1 on immobilized ruthenium catalyst near the critical pressure point of CO 2 with H 2 pressure of 4.0 MPa, reaction temperature of 80 °C and PPh 3 /Ru molar ratio of 6:1. The reaction activity of immobilized catalyst was higher than that of homogeneous catalyst, and the immobilized catalyst also offered the practical advantages such as easy separation and reuse.