Activity of nickel/gamma alumina catalyst for a methanation reaction

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" Activity of nickel/gamma alumina catalyst for a methanation reaction "
S. S. A. Zaidi

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	1112770
Doc. No	:	TLpq230801041
Main Entry	:	S. S. A. Zaidi
Title & Author	:	Activity of nickel/gamma alumina catalyst for a methanation reaction\ S. S. A. Zaidi
College	:	King Fahd University of Petroleum and Minerals (Saudi Arabia)
Date	:	1992
student score	:	1992
Degree	:	M.S.
Page No	:	194
Abstract	:	The reduction of a commercial Ni/usd\gammausdAl2O3 catalyst was carried out at temperature ranged from 250 to 500C and for duration from 2 to 16 hours. The effects of reduction conditions on the activity and selectivity of Ni/usd\gammausdAl2O3 were studied for a methanation reaction in a gradientless Berty reactor. These effects were used to determine optimal reduction conditions of the catalyst. The optimal reduction conditions are: temperature 300C, duration 8 hrs, space velocity 3000 hr, and heating rate of bed 5C/min. The effects of speed of impeller on the rate of methanation were studied and it was found that mass transfer limitations disappeared at a speed of 786 rpm. The effects of space-time, H2:CO ratio, and pressure on the activity and selectivity of the catalyst were studied. It is found that by increasing the space-time, the activity decreases while selectivity to CH4 formation increases from 90 to 96%. (Abstract shortened by UMI.)
Subject	:	Applied sciences
	:	Chemical engineering