skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Preparation of amorphous sulfide sieves

Abstract

The present invention involves methods and compositions for synthesizing catalysts/porous materials. In some embodiments, the resulting materials are amorphous sulfide sieves that can be mass-produced for a variety of uses. In some embodiments, methods of the invention concern any suitable precursor (such as thiomolybdate salt) that is exposed to a high pressure pre-compaction, if need be. For instance, in some cases the final bulk shape (but highly porous) may be same as the original bulk shape. The compacted/uncompacted precursor is then subjected to an open-flow hot isostatic pressing, which causes the precursor to decompose and convert to a highly porous material/catalyst.

Inventors:
; ;
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1175980
Patent Number(s):
7,132,386
Application Number:
10/819,480
Assignee:
University Of Texas OSTI
DOE Contract Number:
FC04-01AL67097
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Siadati, Mohammad H., Alonso, Gabriel, and Chianelli, Russell R. Preparation of amorphous sulfide sieves. United States: N. p., 2006. Web.
Siadati, Mohammad H., Alonso, Gabriel, & Chianelli, Russell R. Preparation of amorphous sulfide sieves. United States.
Siadati, Mohammad H., Alonso, Gabriel, and Chianelli, Russell R. 2006. "Preparation of amorphous sulfide sieves". United States. doi:. https://www.osti.gov/servlets/purl/1175980.
@article{osti_1175980,
title = {Preparation of amorphous sulfide sieves},
author = {Siadati, Mohammad H. and Alonso, Gabriel and Chianelli, Russell R.},
abstractNote = {The present invention involves methods and compositions for synthesizing catalysts/porous materials. In some embodiments, the resulting materials are amorphous sulfide sieves that can be mass-produced for a variety of uses. In some embodiments, methods of the invention concern any suitable precursor (such as thiomolybdate salt) that is exposed to a high pressure pre-compaction, if need be. For instance, in some cases the final bulk shape (but highly porous) may be same as the original bulk shape. The compacted/uncompacted precursor is then subjected to an open-flow hot isostatic pressing, which causes the precursor to decompose and convert to a highly porous material/catalyst.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2006,
month =
}

Patent:

Save / Share:
  • A process is described for preparing a catalyst comprising a mixture of (i) an amorphous sulfide of trivalent chromium, (ii) microcrystallites of a metal sulfide of a metal selected from the group consisting of Mo, W, and mixtures thereof, and (iii) a sulfide of at least one promoter metal selected from the group consisting of Ni, Co, Mn, Zn, Cu, mixtures thereof and mixtures thereof with Fe, the process comprising heating a precursor at a temperature of at least about 200/sup 0/C., in the presence of sulfur and under oxygen free conditions for a time sufficient to form the catalyst.more » The precursor comprises a mixture of (i) a hydrated oxide of trivalent chromium and (ii) a thiometallate salt of the general formula (ML)(Mo/sub y/W/sub 1-y/S/sub 4/) wherein M is one or more of the divalent promoter metals selected from the group consisting of Ni, Co, Mn, Zn, Cu, mixtures thereof and mixtures thereof with Fe, wherein Y is any value ranging from 0 to 1, L is one or more neutral, nitrogen-containing ligands, at least one of which is a chelating polydentate ligand.« less
  • A process is described for hydrorefining a hydrocarbon feed to reduce the contents of nitrogen compounds and sulfur compounds in the feed which comprises contacting the feed at an elevated temperature of at least about 150/sup 0/C and in the presence of hydrogen with a catalyst consisting essentially of a mixture of (i) an amorphous sulfide of trivalent chromium and (ii) microcrystallities of a metal sulfide of a metal selected from the group consisting of Mo, W and mixture thereof, the contacting occurring for a time sufficient to hydrorefine at least a portion of the feed. The patent also describesmore » a process for improving the oxidation stability of a nitrogen and sulfur containing lube oil feed which comprises contacting the feed at an elevated temperature of at least about 150/sup 0/C and in the presence of hydrogen with a catalyst consisting essentially of a mixture of (i) an amorphous sulfide of trivalent chromium and (ii) microcrystallities of metal sulfides of a metal selected from the group consisting of Mo, W and mixture thereof, the contacting occurring for a time sufficient to improve the oxidation stability of the lube oil feed.« less
  • A supported carbon-containing molybdenum sulfide and tungsten sulfide catalyst useful for conducting methanation and hydrotreating reactions, principally the latter, can be formed by compositing a preselected quantity of a porous, refractory inorganic oxide with a complex salt characterized by the formula B /SUB x/ (MO /SUB y/ S/sub 4/- /SUB y/ ) where B is an organo or hydrocarbyl substituted diammonium ion, an organo or hydrocarbyl substituted ammonium ion or quaternary ammonium ion, or an ionic form of a cyclic amine containing one or more basic N atoms, x is 1 where B is an organo or hydrocarbyl substituted diammoniummore » ion, or 2 where B is an organo or hydrocarbyl substituted ammonium or quaternary ammonium ion or an ionic form of a cyclic amine containing one or more basic N atoms, M is molybdenum or tungsten, and y is 0, or a fraction or whole number ranging up to 3, and heat decomposing the salt of said catalyst precursor composite in the presence of hydrogen sulfide and hydrogen to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.« less
  • This patent describes a process for preparing arylene sulfide polymers. It comprises: admixing compounds comprising at least one sulfur source and at least one cyclic organic amide in the presence of water to form an aqueous admixture wherein the molar ratio of the sulfur source to the cyclic organic amide is above 0.55:1; dehydrating the aqueous admixture to form a dehydrated admixture; admixing with the dehydrated admixture at least one polymerizable halo-substituted aromatic compound selected from the group consisting of dihalo-substituted aromatic compounds and mixtures of dihalo-substituted aromatic compounds with polyhalo- substituted aromatic compounds having 3-6 halogen atoms per moleculemore » to form a polymerization mixture; subjecting the polymerization mixture to polymerization conditions effective to produce a mixture comprising an arylene sulfide polymer; and recovering the arylene sulfide polymer.« less