US4430443A — Supported carbon-containing molybdenum and tungst…

Claim 1

Independent Claim 168 words

A process for the preparation of supported carbon-containing molybdenum sulfide and tungsten sulfide catalysts which comprises compositing a preselected quantity of a porous, refractory inorganic oxide with a salt characterized by the formula B.sub.x [MO.sub.y S.sub.4-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 diammonium 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 a gaseous admixture containing hydrogen and hydrogen sulfide to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.

Claim 2

Dependent Claim 168 words

A process for the preparation of supported carbon-containing molybdenum sulfide and tungsten sulfide catalysts which comprises compositing a preselected quantity of a porous, refractory inorganic oxide with a salt characterized by the formula B.sub.x [MO.sub.y S.sub.4-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 diammonium 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 a gaseous admixture containing hydrogen and hydrogen sulfide to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.

Claim 3

Dependent Claim 47 words

The process of claim 1, wherein the supported carbon-containing molybdenum or tungsten sulfide catalyst precursor composite, prior to decomposition of the salt, contains from about 5 percent to about 30 percent of the salt, calculated as MoO 3 or WO 3 on an ignition loss free basis.

Claim 4

Dependent Claim 31 words

The process of claim 1 wherein the catalyst precursor composite is heated at temperatures ranging from about 150° C. to about 400° C. to heat decompose the salt of said composite.

Claim 5

Dependent Claim 18 words

The process of claim 3 wherein the decomposition temperature ranges from about 200° C. to about 370° C.

Claim 6

Dependent Claim 59 words

The process of claim 1 wherein the decomposition temperature ranges from about 150° C. to about 400° C., and the salt impregnated catalyst precursor composite is contacted with the gaseous admixture containing hydrogen sulfide and hydrogen at a flow rate ranging from about 50 to about 5000 V/H/V, and at pressures ranging from about 0 to about 2000 psig.

Claim 7

Dependent Claim 53 words

The process of claim 5 wherein the flow rate of the hydrogen sulfide and hydrogen ranges from about 100 to about 1000 V/H/V, the pressure ranges from about 0 to about 200 psig, and the concentration of the hydrogen sulfide in the gaseous admixture ranges from about 0.5 percent to about 50 percent.

Claim 8

Dependent Claim 13 words

The process of claim 1 wherein the porous, refractory inorganic oxide is alumina.

Claim 9

Dependent Claim 74 words

The process of claim 1 wherein the porous, refractory inorganic oxide is particulate alumina, the salt is dissolved in a solvent, and the particulate alumina and salt solution are contacted together and the particulate alumina impregnated with the salt solution, the impregnated alumina is dried to remove the solvent, and the dry, salt-impregnated alumina heated to a temperature sufficient to decompose the salt and form said supported carbon-containing molybdenum sulfide or tungsten sulfide ctalysts.

Claim 10

Dependent Claim 30 words

The process of claim 1 wherein, in the salt characterized by the formula B x [MO y S 4-y ], M is molybdenum and y ranges from 0 to 0.5.

Claim 11

Dependent Claim 42 words

The process of claim 1 wherein a Group VIII-B metal, or admixture of said metals, exclusive of said metal added by incorporation of said heat decomposable thiomolybdate or thiotungstate salt, is composited with said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.

Claim 12

Dependent Claim 170 words

As a composition of matter, supported carbon-containing molybdenum sulfide or tungsten sulfide catalysts formed by the steps comprising compositing a preselected quantity of a porous, refractory inorganic oxide with a salt characterized by the formula B.sub.x [MO.sub.y S.sub.4-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 diammonium 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 a gaseous admixture containing hydrogen sulfide and hydrogen to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.

Claim 13

Dependent Claim 170 words

As a composition of matter, supported carbon-containing molybdenum sulfide or tungsten sulfide catalysts formed by the steps comprising compositing a preselected quantity of a porous, refractory inorganic oxide with a salt characterized by the formula B.sub.x [MO.sub.y S.sub.4-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 diammonium 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 a gaseous admixture containing hydrogen sulfide and hydrogen to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.

Claim 14

Dependent Claim 47 words

The composition of claim 11 wherein the supported carbon-containing molybdenum or tungsten sulfide catalyst precursor composite, prior to decomposition of the salt, contains from about 5 percent to about 30 percent of the salt, calculated as MoO 3 or WO 3 on an ignition loss free basis.

Claim 15

Dependent Claim 31 words

The composition of claim 11 wherein the catalyst precursor composite is heated at temperatures ranging from about 150° C. to about 400° C. to heat decompose the salt of said composite.

Claim 16

Dependent Claim 18 words

The composition of claim 13 wherein the decomposition temperature ranges from about 200° C. to about 370° C.

Claim 17

Dependent Claim 58 words

The composition of claim 11 wherein the decomposition temperature ranges from about 150° C. to about 400° C., and the salt impregnated catalyst precursor composite is contacted with the gaseous admixture containing hydrogen sulfide and hydrogen at a flow rate ranging from about 50 to about 5000 V/H/V, at pressures ranging from about 0 to about 200 psig.

Claim 18

Dependent Claim 56 words

The composition of claim 15 wherein the flow rate of the gaseous admixture containing hydrogen sulfide and hydrogen ranges from about 100 to about 1000 V/H/V, the pressure ranges from about 0 to about 200 psig, and the concentration of the hydrogen sulfide within the gaseous admixture ranges from about 0.5 percent to about 50 percent.

Claim 19

Dependent Claim 13 words

The composition of claim 11 wherein the porous, refractory inorganic oxide is alumina.

Claim 20

Dependent Claim 74 words

The composition of claim 11 wherein the porous, refractory inorganic oxide is particulate alumina, the salt is dissolved in a solvent, and the particulate alumina and salt solution are contacted together and the particulate alumina impregnated with the salt solution, the impregnated alumina is dried to remove the solvent, and the dry, salt-impregnated alumina heated to a temperature sufficient to decompose the salt and form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalysts.

Claim 21

Dependent Claim 30 words

The composition of claim 11 wherein, in the salt characterized by the formula B x [MO y S 4-y ], M is molybdenum and y ranges from 0 to 0.5.

Claim 22

Dependent Claim 42 words

The composition of claim 11 wherein a Group VIII-B metal, or admixture of said metals, exclusive of said metal added by incorporation of said heat decomposable thiomolybdate or thiotungstate salt, is composited with said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1987-02-06	1987-08-08	1988-02-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1991-02-06	1991-08-08	1992-02-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1995-02-06	1995-08-08	1996-02-07	$7700.00	Window Closed / Lapsed

Supported carbon-containing molybdenum and tungsten sulfide catalysts, their preparation and use

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