Abstract:
The present invention includes a composition of matter comprising a sulfide of a metal selected from Groups VIB, VIIB and VIII of the Periodic Tables, or mixtures thereof, and an aromatic, nitrogen-containing heterocyclic compound selected from the group consisting of tetrahydroquinoline, and the mono and diorgano substituted derivatives of tetrahydroquinoline. These compositions are useful as catalyst precursors. Indeed, upon heating at temperatures above 200.degree. C., the compounds are converted to active catalysts useful in polymerizing nitrogen-containing heterocyclic compounds.
Abstract:
A process for the hydrorefining of hydrocarbon feed to reduce the contents of sulfur and nitrogen compounds therein is disclosed which comprises contacting the hydrocarbon feed at elevated temperatures of at least about 150.degree. C. in the presence of hydrogen with a catalyst consisting essentially of mixture of (i) an amorphous sulfide of trivalent chromium and (ii) microcrystallites of metal sulfide of a metal selected from the group consisting of Mo, W and mixture thereof. These compositions have been found to be useful hydrotreating catalysts having nitrogen removal activity superior to that of commercial catalysts derived from cobalt molybdate on alumina.
Abstract:
This invention relates to the preparation and use of catalysts useful for hydroprocessing processes, such as hydrotreating, wherein said catalysts are formed by heating, at elevated temperature, in the presence of sulfur and under oxygen-free conditions, a composite of support material and one or more catalyst precursor salts containing a thiometallate anion of Mo, W or mixture thereof and a cation comprising one or more divalent promoter metals at least one of which is iron, wherein said promoter metal or metals are chelated by at least one neutral, nitrogen-containing polydentate ligand, and wherein said additional divalent promoter metal, if any, is selected from the group consisting of Ni, Co, Mn, Zn, Cu and mixture thereof.
Abstract:
Supported hydroprocessing catalysts comprising a sulfide of trivalent chromium and Mo, W or mixture thereof are obtained by compositing a preselected quantity of support material with a precursor comprising a mixture of (i) a hydrated oxide of trivalent chromium and (ii) a salt containing a thiometallate anion of Mo or W and a cation comprising the conjugate acid of at least one neutral, nitrogen-containing polydentate ligand and heating the composite in the presence of sulfur and hydrogen in an oxygen-free atmosphere. These compositions have been found to be useful hydrotreating catalysts having nitrogen removal activity superior to that of commercial catalysts derived from cobalt molybdate on alumina.
Abstract:
A new method for the preparation of polyquinoline is discovered. Upon the treatment of tetrahydroquinoline (THQ) with ReS.sub.2+x at the refluxing temperature of THQ, a nearly quantitative yield of polyquinoline is obtained and characterized.
Abstract:
Hydrocarbon feeds are upgraded by contacting a feed, at elevated temperature and in the presence of hydrogen, with a supported self-promoted catalyst prepared by heating a composite of support material and one or more catalyst precursor salts under oxygen-free conditions and in the presence of sulfur at a temperature of at least about 250.degree. C. The precursor salt or salts will be of the general formula (ML)(Mo.sub.y W.sub.1-y S.sub.4) wherein M comprises one or more promoter metals selected from the group consisting essentially of Mn, Fe, Co, Ni, Zn and mixtures thereof, wherein y is any value ranging from 0 to 1 and wherein L is one or more neutral, nitrogen-containing ligands at least one of which is a chelating, polydentate ligand.
Abstract:
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 formulaB.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 hydrogen, hydrocarbon and sulfur to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.
Abstract:
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 formulaB.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 hydrogen, hydrocarbon and sulfur to form said supported carbon-containing molybdenum sulfide or tungsten sulfide catalyst.
Abstract:
A zero-discharge landfill process is disclosed herein. The process described in the present invention recycles the exhaust gases from a combustion engine which reheats the landfill and provides moisture. Additionally, the CO2 from the exhaust gases releases additional methane. Methane production in landfills can thus be enhanced by the method of the present invention. Furthermore, a portion of the exhaust gas can be used to cultivate algae in a cultivation tank. The cultivation of the algal species is enhanced in the presence of water, CO2, CO, and the elevated temperatures. Optionally, a first portion of the cultivated algae can be passed through the landfill to increase methane production in the landfill and a second portion of the cultivated algae can be transferred to a biodiesel production tank, for the conversion of the one or more algal oils and lipids to a biodiesel or a biofuel by a transesterification reaction
Abstract:
A composition includes a compound selected from the group consisting of formula (I), (III), and (IV). The compound of formula (I) is: wherein A is N, C, or S; the A-R5 bond is a single bond or a double bond; R1 is H, —NH2, or —S-aryl; R2 is H or together with R3 form a fused bicyclic group; R3 is H, or together with R2 form a fused bicyclic group, or together with R4 and R5 form a fused tricyclic group; R4 is H, or together with R3 and R5 form a fused tricyclic group, or R5 is H, O, or together with R3 and R4 form a fused tricyclic group; R6 is H, OH, —NH-alkyl, or —NH-aryl; R7 is H; R8 is H, —O-aryl, or halogen; and R9 is H, NH2, —NH-alkyl, —NH-aryl, OH, or —S-aryl. Formula (III) is: wherein B and D are each independently C, N, or S; Z is C; the B—R11 bond is a single bond or a double bond; R11, is O, —NH, or together with R12 form a fused tricyclic group; R12 comprises a fused bicyclic group, or together with R11, form a fused tricyclic group; the D-R13 bond and the Z-D bond are each independently a single bond or a double bond; R13 is O; and R14-R17 are each independently either H or halogen. Formula (IV) is wherein F is C or N; the E—F bond, the E-R25 bond, and the G-R27 bond are each independently either a single bond or a double bond; R25 is O or together with R26 and R27 form a fused bicyclic group; R26 is a substituted aryl group or together with R25 and R27 form a fused bicyclic group; R27 is O or together with R25 and R26 form a fused bicyclic group; and R28 is H or —NH2. A support is provided wherein the compound is complexed with the surface of the support.