HYDROTHERMAL PRETREATMENT FOR INCREASING AVERAGE PORE SIZE IN CATALYST SUPPORTS

A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor .eta.. Th e pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore...

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Bibliographic Details
Main Authors NIU, TIANYAN, STARGUZZI, GLORIA I, WANG, DAXIANG, WRIGHT, HAROLD A, CNOSSEN, ROBIN G
Format Patent
LanguageEnglish
French
Published 01.02.2004
Edition7
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOUNDS THEREOF
INORGANIC CHEMISTRY
METALLURGY
NON-METALLIC ELEMENTS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A pretreatment method for increasing the average pore size of a catalyst support is disclosed which increases the diffusivity and effectiveness factor .eta.. Th e pretreatment method includes calcining the support in moisturized air at an elevated temperature sufficient to increase the average pore size. In some embodiments, the support may be treated with an acidic/basic solution prior to the calcination step. Alternatively, the calcination step may occur in a gas mixture including water/air/acidic (or basic) gases.
Bibliography:Application Number: CA20032436475