Hydrocarbon conversion processes using novel crystalline silicon

Details Hydrocarbon conversion processes using novel crystalline silicon Hydrocarbon conversion processes using novel crystalline silicon

1991-02-19

1992-08-04

Myers, Helane

Mineral oils: processes and products

Chemical conversion of hydrocarbons

Cracking

208111, 208133, 208115, 208116, 585462, 585463, 585467, C10G 1102, C10G 4702

Patent

active

051356422

ABSTRACT:
This invention relates to novel silicon enhanced aluminas (SEAL), processes to prepare them, and hydrocarbon conversion processes using the SEALs. The SEAL compositions have a bulk empirical formula of Al.sub.2-x Si.sub.x O.sub.3 F.sub.x where x varies from about 0.01 to about 0.5. This SEAL material has a three-dimensional pore structure with the pores having diameters in the range of about 20 to about 300.ANG., a crystal structure characteristic of alumina, and where the surface of the SEAL has a higher silicon concentration than the interior of the SEAL. The SEAL is prepared by contacting an alumina with a fluorosilicate salt. This SEAL can be calcined to give a calcined seal with a formula Al.sub.2-x Si.sub.x O.sub.3 F.sub.y where x is as defined above and y varies from 0.01 to x. The calcined SEAL contains both strong and weak acid sites. These SEAL compositions are particularly useful in hydrocracking, cracking and alkylation processes.

REFERENCES:
patent: 2620314 (1952-12-01), Hoekstra
patent: 4310440 (1982-01-01), Wilson et al.
patent: 4422959 (1983-12-01), Lawson et al.
patent: 4440871 (1984-04-01), Lok et al.
patent: 4503023 (1985-03-01), Breck et al.
patent: 4576711 (1986-03-01), Ward et al.
patent: 4597956 (1986-07-01), Hinchey et al.
patent: 4610856 (1986-09-01), Skeels et al.
patent: 4711770 (1987-12-01), Skeels et al.
patent: 4753910 (1988-06-01), Han et al.
patent: 4758330 (1988-07-01), Kidd
patent: 4806513 (1989-02-01), McDaniel et al.
patent: 4870222 (1989-09-01), Bakas et al.
"Zeolite Chemistry V-Substitution of Silicon for Aluminum in Zeolites via Reaction with Aqueous Fluorosilicate" published at p. 87 of Proceedings of 6th International Zeolite Conference, 1983, edited by David Olson; Butterworth, Guildford, U.K.
"Faujasites Dealuminated with Ammonium Hexafluorosilicate; Variables Affecting the Method of Preparation" by G. Garralon et al., at p. 268 of Zeolites, vol. 8, Jul. 1988.
Merck Index, 11th Edition, (1989) published by Merck & Co., Rahway, N.J., U.S.A.

Affiliated with

Also associated with

Rating

Hydrocarbon conversion processes using novel crystalline silicon does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydrocarbon conversion processes using novel crystalline silicon, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrocarbon conversion processes using novel crystalline silicon will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-776269