Zeolite Y

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United States of America Patent

PATENT NO 9308521
APP PUB NO 20140135560A1
SERIAL NO

14157022

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Process for preparing a modified zeolite Y which process comprises subjecting zeolite Y having a silica to alumina molar ratio of at least 10 to calcination at a temperature of from 700 to 1000° C. wherein (i) the steam partial pressure is at most 0.06 bar at a temperature of from 700 to 800° C., (ii) the steam partial pressure is at most 0.08 bar at a temperature of from 800 to 850° C., (iii) the steam partial pressure is at least 0.03 bar at a temperature of from 850 to 900° C., and (iv) the steam partial pressure is at least 0.05 bar at a temperature of from 900 to 950° C. and (v) the steam partial pressure is at least 0.07 bar at a temperature of from 950 to 1000° C., a modified zeolite Y obtainable by such process, zeolite Y having a silica to alumina molar ratio of at least 10, the infrared spectrum of which has a peak at 3700 cm−1 but substantially no peaks at 3605 and 3670 cm−1 and zeolite Y having a silica to alumina molar ratio of at least 10, which zeolite Y has an acidity as measured by exchange with perdeuterated benzene of at most 20 micromole/gram.

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Patent Owner(s)

Patent OwnerAddress
PQ CORPORATIONP O BOX 840 VALLEY FORGE PA 19482-0840

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cooper, David Allen Morrisville, US 10 23
Domokos, Laszlo Hoofddorp, NL 12 166
Ong, Lay Hwa Senja Link, SG 7 9
Ouwehand, Cornelius Purmerend, NL 1 0

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