Production of olefins with nickel--zeolite catalyst
It has been reported that NiX and NiY zeolites have polymerized ethylene to olefine of relatively low molecular weight at temperatures from ambient to 350/sup 0/C and pressures at or above atmospheric. The products have been mainly butenes, and higher oligomers are formed with lower yields. It has been proposed that the active site of this catalyst is a highly dispersed zero-valent nickel. CoY and RhY zeolites are also active. Other catalysts reported are phosphoric acid, metallic cobalt, nickel, chromium, molybdenum, and tungsten, and their oxides, on supports such as alumina, silica, silica--alumina, kieselguhr or carbon; however, their selectivity is low and there are some difficulties during regeneration. Zeolies have fewer such disadvantages. The zeolite catalyzed ethylene oligomerization reaction was studied. Experimental results suggest that the active sites of Ni--X and Ni/sup 0/ dispersed in the large pores of zeolite. Ethylene oligomerization, mainly to C/sub 4/, over a Ni--zeolite catalyst at 250/sup 0/C offers intersting industrial possibilities.
- Research Organization:
- Instituto Mexicano del Petroleo, Mexico City
- OSTI ID:
- 6500609
- Report Number(s):
- CONF-780305-P3
- Journal Information:
- Prepr., Div. Pet. Chem., Am. Chem. Soc.; (United States), Vol. 23:3; Conference: American Chemical Society conference, Anaheim, CA, USA, 12 Mar 1978
- Country of Publication:
- United States
- Language:
- English
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