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Title: Materials derived from synthetic organo-clay complexes as novel hydrodesulfurization catalyst supports.

A series of mesoporous synthetic organo-clay complexes has been prepared by hydrothermal crystallization of gels containing silica, magnesium hydroxide, lithium fluoride, and an organic of choice, followed by calcination to remove the organics. The organic serves to impart structural order to the inorganic network that does not disappear upon its removal. The choice of organic modifier can be used to control the pore structure of the resulting mesoporous materials. Pore size distributions appear in some cases to be related to the type of polymer packing upon clay formation in situ. These materials are being explored as Co Mo hydrodesulfurization (HDS) catalyst supports. Preliminary HDS results show performance commensurate with commercial catalysis for the mesoporous materials when a model heavy oil feed is used (1 wt% S as dibenzothiophene in hexadecane). Temperature programmed reduction experiments of used catalysts suggest a relationship between HDS activity and ease of reduction of the CoMo/clay catalysts. Reactivity of the CoMo clay also correlates with the percentage of mesopore volume remaining after reaction. Losses in mesopore volume are largely recouped by recalcination, suggesting that reversible coke is formed inside the pore structure of clays faster than inside conventional alumina.
Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
937990
Report Number(s):
ANL/CHM/JA-25320
Journal ID: ISSN 1387-1811; TRN: US200906%%460
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Microporous Mesoporous Mater.; Journal Volume: 20; Journal Issue: 1998
Research Org:
Argonne National Laboratory (ANL)
Sponsoring Org:
ER
Country of Publication:
United States
Language:
ENGLISH
Subject:
01 COAL, LIGNITE, AND PEAT; CALCINATION; CATALYSIS; CATALYST SUPPORTS; CATALYSTS; CLAYS; COKE; CRYSTALLIZATION; HEXADECANE; LITHIUM FLUORIDES; MAGNESIUM HYDROXIDES; PERFORMANCE; POLYMERS; PORE STRUCTURE; REMOVAL; SILICA