초록 ▼

A method of preparation of a combined ZSM-5 and ferrierite aluminosilicate is disclosed utilizing a crystallization admixture comprising sodium silicate, a compound of aluminum, sodium oxide, water and a combination of amines comprising piperidine and an aliphatic amine selected from the group of n-

A method of preparation of a combined ZSM-5 and ferrierite aluminosilicate is disclosed utilizing a crystallization admixture comprising sodium silicate, a compound of aluminum, sodium oxide, water and a combination of amines comprising piperidine and an aliphatic amine selected from the group of n-butylamine and tetrapropylammonium hydroxide. The latter chosen amine is directive for a ZSM-5 aluminosilicate while the former is directive for a ferrierite aluminosilicate. Examination by Scanning Electron Microscope (SEM) demonstrates a different catalyst morphology than a catalyst synthesized using silica gel and pyridine. The resultant catalyst is useful in the dewaxing of lubricating oils, especially those oils not necessarily treatable by a unitary ferrierite or a unitary ZSM-5 catalyst.

대표청구항 ▼

A method of preparation of a combined ZSM-5 and ferrierite aluminosilicate which comprises crystallizing, at crystallization conditions, an aqueous crystallization admixture comprising sodium silicate, a compound of aluminum, sodium oxide, water and a combination of amines comprising piperidine and

A method of preparation of a combined ZSM-5 and ferrierite aluminosilicate which comprises crystallizing, at crystallization conditions, an aqueous crystallization admixture comprising sodium silicate, a compound of aluminum, sodium oxide, water and a combination of amines comprising piperidine and an aliphatic amine selected from the group consisting of n-butylamine, tetrapropylammonium hydroxide, and mixtures thereof, wherein said components are present in a content expressed by: silica:alumina:sodium oxide:water:total amine content equal to 25:XXX:YYY:350-2000:3-20 wherein XXX is equal to 0.1 to 2.0 wherein YYY is equal to 0.2 to 10 and wherein the ratio of piperidine to said chosen aliphatic amine is equal to 0.1 to 20.