Exxonmobil Chemical Patents Inc.

Nitish Mittal

Wenyih Frank Lai

Larry Lee Iaccino

Doron Levin

Tilman W Beutel

Xiaoying Bao

William R Gunther

Jeremy W Bedard

Maria Milina

Andrew P Palermo

A catalyst comprising a microporous crystalline metallosilicate having a Constraint Index of 12, or 10, or 8, or 6 or less, a binder, a Group 1 alkali metal or a compound thereof and/or a Group 2 alkaline earth metal or a compound thereof, a Group 10 metal or a compound thereof, and, optionally, a Group 11 metal or a compound thereof; wherein the catalyst is calcined in a first calcining step before the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof; and wherein the first calcining step includes heating the catalyst to first temperatures of greater than 500&#xb0; C.; and wherein the catalyst is calcined in a second calcining step after the addition of the Group 10 metal or compound thereof and optionally the Group 11 metal or compound thereof wherein the second calcining step includes heating the catalyst to temperatures of greater than 400&#xb0; C.

Calcination of microporous molecular sieve catalysts

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Houston, TX, United States of America

Nitish Mittal