Exxon Research and Engineering Company

Exxonmobil Research and Engineering Company

Exxon Chemical Patents, Inc.

Lothar Ruediger Czarnetzki

Harry William Deckman

Edward William Corcoran, Jr

Antonie Jan Bons

James Alexander McHenry

Wenyih Frank Lai

Wilfried Jozef Mortier

Marc H Anthonis

William Edward Wales

Allan J Jacobson

Johannes Petrus Verduijn

Frank Lai

Jannetje Maatje Van Den Berge, Legal Representative

Cornelius Wilhelmus Van Oorschot

Anthonie Jan Burggraaf

Klaas Keizer

Zeger Alexander Eduard Pieter Vroon

Wim Guy DeGijnst

James Alexander Mc Henry

Wilfred Jozef Mortier

Layers comprising a molecular sieve layer on a porous or non-porous support, having uniform properties and allowing high flux are prepared from colloidal solutions of zeolite or other molecular sieve precursors (particle size less than 100 nm), by deposition, e.g., by spin or dip-coating, or by in situ crystallization.

Molecular sieve layers and processes for their manufacture

Molecular sieves and processes for their manufacture

Compositions useful in separating molecules or catalytic conversions comprise a substrate, a zeolite or zeolite-like layer, a selectivity enhancing coating in contact with the zeolite layer and optionally a permeable intermediate layer in contact with the substrate the zeolite layer being in contact either with the substrate or the optional intermediate layer.

Zeolite containing composition with a selectivity enhancing coating

The present invention is an improvement in a separation process. When molecular sieve membranes are used in a separation process transport flux decays over time. It has been discovered that the presence of hydrogen in the feed stream, permeate stream, or feed stream when present, either alone or in combination, causes a reduction in flux decay.

Separation process using zeolite membrane

Membranes useful in separating moleculres or catalytic conversions comprise a substrate, a zeolite or zeolite-like layer, a selectivity enhancing coating in contact with the zeolite layer and optionally a permeable intermediate layer in contact with the substrate the zeolite layer being in contact either with the substrate or the optional intermediate layer.

Zeolite membrane with a selectivity enhancing coating

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Leiderdorp, Netherlands

Lothar Ruediger Czarnetzki