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Kinetics of the methanation of carbon dioxide over a supported Ni‐La 2 O 3 catalyst
Author(s) -
Kai Takami,
Takahashi Takeshige,
Furusaki Shintaro
Publication year - 1988
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450660226
Subject(s) - methanation , catalysis , carbon dioxide , kinetics , hydrogen , chemistry , carbon fibers , carbon monoxide , chemical kinetics , inorganic chemistry , thermodynamics , materials science , organic chemistry , composite material , physics , quantum mechanics , composite number
The kinetics of the methanation of carbon dioxide was investigated using an alumina supported Ni‐La 2 O 2 catalyst in a differential and integral reactor. In the differential reactor the molar ratio of H 2 to CO 2 was varied from 0.6 to 30. In the integral reactor the rates were measured with up to 90% conversion. Both reactor tests were carried out at temperatures between 513 and 593 K. The experimental results were described by a Langmuir‐Hinshelwood type equation. The kinetics can be explained by assuming equilibrium of dissociative carbon dioxide and hydrogen adsorption, and assuming hydrogenation of surface carbon as the rate determining step.