Basf Aktiengesellschaft

Exxon Chemical Patents, Inc.

Nur R Gurak

Ronald J Thompson

James P Russell

David E Vaughan

Ram N Bhatia

Alexandr P Glivicky

Valentino G Xanthopoulo

Jacques M Hamard

Joseph W Gabriel

Wilfried J Mortier

Peter L Josty

Norman C Murtaugh

Joseph M Yarkovsky

This invention provides a simple process for the removal of organo sulfide contaminants from lower C.sub.2 to C.sub.4 olefin feedstocks comprising washing the lower olefin containing the sulfide contaminant with a liquid C.sub.6 or higher olefin which is a solvent for the sulfur contaminant. The washing process tends to extract a substantial quantity of the sulfur contaminant from the lower olefin. The lower olefin is then separated from the higher olefin solution by evaporation or fractional distillation. The process provides for removal of greater than 90% by weight of organic sulfides present in lower olefin feedstocks.

Desulfurization of light olefins

The present invention provides a highly selective catalytic cracking process for the conversion of feedstocks containing a predominant content of C.sub.10 and higher mixed olefins into C.sub.9 and lower olefin products at efficiencies of greater than 20%. said products further characterized in that the content C.sub.6 to C.sub.9 olefins is maximized while the content of C.sub.2 to C.sub.4 olefins is minimized. The process involves contacting an olefin feedstock mixture containing at least about 50 weight %, more preferably at least about 70 weight %, of C.sub.10 and higher olefins under cracking conditions with a catalyst selected from the group consisting of amorphous precipitated silica, selected crystalline silicates and aluminosilicates, namely beta, mordenite and ZSM-5 types, as well as ion exchanged or acid variants thereof. Cracking conditions include a temperature within the range of from about 250.degree. up to about 450.degree. C., pressures from atmospheric up to about 300 psig and a space velocity within the range of from about 0.5 up to about 4 wt/wt/hour.

Process for catalytically converting C10 and higher olefins to C9 and

Aqueous dispersions of binders may be used to make a slurry of a ceramic material. The slurry may then be shaped to a green part by conventional techniques such as tape casting. The slurry may be spray dried to give a free flowing powder which may be formed by dry pressing, roll compaction or other similar techniques. The tensile strength of the green part may be increased by subjecting the green part to an energy treatment such as heat or irradiation including ultraviolet (UV), X-rays and electron beams.

Ceramics

Porous green ceramic parts may be prepared by componding 90 to 60 weight percent of a particulate ceramic material with 10 to 40 weight percent, on a dry basis, of a latex of a polymer. The compound is frothed, shaped and set. The green part may then be sintered. The process avoids the expense of preparing solid ceramic compounds containing waxes or sawdust which burn out to create voids. The process is useful to prepare ceramic filters, catalysts, or light weight metal ceramic foams.

Process for manufacturing green and ceramic foam

Growing community of inventors

Sarnia, Canada

Nur R Gurak