Corning Incorporated

Jennifer M Torns

Tinghong Tao

William Peter Addiego

Willard A Cutler

Kevin Robert Brundage

Christopher Raymond Glose

Brian Paul Usiak

High-surface-area alumina honeycombs are subjected to a water vapor pre-treatment to obtain protection from cracking damage on subsequent exposure to aqueous media e.g., aqueous solutions for depositing catalysts on the honeycombs.

Method for treating alumina honeycomb monoliths

The invention provides a monolithic catalyst support for hydrogenation and hydrotreating and in particular for selective hydrogenation of pyrolysis gasoline. The monolithic catalyst includes (i) a multicellular monolith body, preferably having a honeycomb structure, most preferably a honeycomb structure made of cordierite, the honeycomb structure having an inlet end, an outlet end, and a multiplicity of mutually adjoining cells extending along the length of the body from the inlet end to the outlet end, the cells being separated from one another by porous walls, and, (ii) a coating consisting of theta alumina synthesized in situ on the multicellular monolith body. The in situ theta alumina is strongly bonded with the multicellular monolith body and comprises at least 50% by weight of the washcoat layer, and preferably greater than 90% by weight.

In situ theta alumina coated monolithic catalyst supports

A monolithic structure having active material that includes at least inorganic ion exchange material, for purifying a liquid stream of contaminants such as heavy metals, chlorine, volatile organics, pesticides, herbicides, and/or parasites, etc. The structure has an inlet end and an outlet end and a multiplicity of cells extending from inlet to outlet end. The cells are separated from one another by porous walls that are alternatively plugged at each end such that a liquid stream that enters the structure, enters through the unplugged cells at the inlet end and passes through porous walls to be purified by the active material, and thereafter passes out of the structure through unplugged cells at the outlet end. One method of making the structure involves applying active material as a coating on an alternately plugged substrate. The average particle size of the active material after calcination is greater than the average cell wall pore size of the substrate. The coated substrate is dried at no greater than 200&deg; C., and calcined at no greater than 650&deg; C., to bond the active material to the substrate. The structure can be shaped from a forming mixture of the active materials.

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Painted Post, NY, United States of America

Jennifer M Torns