Akzo Nobel N.v.

Akzona Incorporated

Hendrik Gerard Bruil

Karl Seibert

Klaus Neumann

Franciscus Wilhelmus Van Houtert

Ernst Spiess

Nicolaas Gerardus Bader

Eelco Titus Vogt

Johannes Ebregt

An FCC catalyst containing zeolite particles at least 50% of the outer surface of which is coated with a layer of pre-formed inorganic oxide is used in fluidized catalytic cracking of hydrocarbon feeds. The inorganic oxide layer has a thickness in the range of 10 nm to 5 &mgr;m and the ratio between the particle size of the oxide and the mean particle size of the zeolite particles is in the range of 0.001:1 to 0.5:1. The zeolite particles may be coated by contacting uncoated zeolite particles having a mean particle size in the range of 0.1 to 10 &mgr;m with an aqueous medium containing particles of the oxide having a particle size in the range of 10 to 5,000 nm, after which the particles are optionally dried or calcined. The oxide is preferably alumina. The FCC catalysts are less rapidly deactivated by contaminant metals present in heavy feeds and are less susceptible to blocking of the zeolite pores by coke.

FCC catalyst comprising coated zeolite particles

Hydrocracking catalyst comprising coated cracking component particles

A thickening agent comprising polyether derivatives of the general formula: ##STR1## wherein R.sub.1 is a substituted or unsubstituted hydrocarbon radical or an alkylphenol radical having 10 or more carbon atoms, n is 10 to 100, m is 0 to 25, and p is 1 to 3, and wherein R.sub.2 is an alkyl radical having 8 to 30 carbon atoms. These polyether derivatives are prepared by the gradual addition of a long-chain 1,2-epoxy having a chain length of 10 to 32 carbon atoms at temperatures from 100.degree. to 200.degree. C., to either (1) a polyethylene glycol monoether having an average molecular weight of 800 to 5000, the monoether group thereof being a substituted or unsubstituted hydrocarbon radical having at least 10 carbon atoms; or to (2) a polyethylene glycol-polypropylene glycol monoether with an average molecular weight of 850 to 6300, and having repeating ethylene oxide and propylene oxide units each forming a polyethylene glycol and polypropylene glycol block, respectively, the polypropylene glycol block having an average molecular weight of no more than 1300, and the monoether group forming the end of the polyethylene glycol block and being a substituted or unsubstituted hydrocarbon radical having at least 10 carbon atoms. This thickening agent is prepared using 0.1 to 1.0% by weight of an alkali hydroxide, referring to the total quantity of the long-chain epoxy and the monoether.

Thickening agent based on polyether derivatives

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Ede, Netherlands

Hendrik Gerard Bruil