Patent classifications
B01J2531/64
Process for the preparation of a catalyst based on molybdenum for use in hydrotreatment or in hydrocracking
The invention concerns a process for the preparation of a catalyst for carrying out hydrogenation reactions in hydrotreatment and hydrocracking processes. Said catalyst is prepared from at least one mononuclear precursor based on molybdenum (Mo), in its monomeric or dimeric form, having at least one Mo═O or Mo—OR bond or at least one Mo═S or Mo—SR bond where [R=C.sub.xH.sub.y where x≧1 and (x−1)≦y≦(2x+1) or R=Si(OR′).sub.3 or R=Si(R′).sub.3 where R′=C.sub.x′H.sub.y′ where x′≧1 and (x′−1)≦y′≦(2x′+1)], and optionally from at least one promoter element from group VIII. Said precursors are deposited onto an oxide support which is suitable for the process in which it is used, said catalyst being dried at a temperature of less than 200° C. then advantageously being sulphurized before being deployed in said process.
ACTIVATION OF SUPPORTED OLEFIN METATHESIS CATALYSTS BY ORGANIC REDUCTANTS
An organic reductant, in particular an organo silicon reductant suitable for activating supported catalysts of the type MO.sub.nE.sub.m, wherein E is S and/or Se, in particular MO.sub.n, wherein M is W, Mo or Re, is described as well as its use in metathesis reactions. The reduced catalysts are able to metathesize olefins at low temperatures and are therefore also suitable for metathesis of functionalized olefins.
ISOPOLY-MOLYBDIC ACID COORDINATION POLYMER CATALYST, METHOD OF MANUFACTURING THE SAME AND APPLICATION THEREOF
An isopoly-molybdic acid coordination polymer catalyst for manufacturing polycaprolactone and method of manufacturing the same are provided. It relates to a field of catalysts from polycaprolactone. The chemical formula of the isopoly-molybdic acid coordination polymer catalyst is [Cu.sub.2(trz).sub.2(γ-Mo.sub.8O.sub.26).sub.0.5(H.sub.2O).sub.2]. In the chemical formula, trz is 1,2,4-triazole negative monovalent anion, and [γ-Mo.sub.8O.sub.26] is a γ type octamolybdate anion. This synthesis method offers higher yield with strong reproducibility. The resulting crystal products have higher purity. The isopoly-molybdic acid coordination polymer catalyst shows high catalytic activity towards the bulk ring-opening polymerization of caprolactone. The resulting polycaprolactone has a weight average molecular weight exceeding 50,000 and a narrow molecular distribution. The polycaprolactone has great potential in the application of low- to medium-temperature thermoplastic medical materials.
METHOD FOR PRODUCING OLEFIN CONTAINING CHLORINE AND FLUORINE
A method for producing at least one olefin compound selected from the group consisting of a compound of formula (51) and a compound of formula (52), the method including reacting an olefin compound of formula (21) with a olefin compound of formula (31) in the presence of at least one metal catalyst selected from the group consisting of a compound of formula (11), a compound of formula (12), a compound of formula (13), a compound of formula (14), and a compound of formula (15).
##STR00001##
PROCESS FOR PRODUCING METHANOL
A process for catalyzed reaction of CO and H.sub.2 into methanol includes the step of reacting the CO and H.sub.2 with a catalyst comprising a transition metal and at least one Lewis basic ligand together with at least one nucleophilic promoter so as to produce the methanol as a product.
PRODUCTION OF FATTY OLEFIN DERIVATIVES VIA OLEFIN METATHESIS
In one aspect, the invention provides a method for synthesizing a fatty olefin derivative. The method includes: a) contacting an olefin according to Formula I
##STR00001##
with a metathesis reaction partner according to Formula IIb
##STR00002##
in the presence of a metathesis catalyst under conditions sufficient to form a metathesis product according to Formula IIIb:
##STR00003##
and
b) converting the metathesis product to the fatty olefin derivative. Each R.sup.1 is independently selected from H, C.sub.1-18 alkyl, and C.sub.2-18 alkenyl; R.sup.2b is C.sub.1-8 alkyl; subscript y is an integer ranging from 0 to 17; and subscript z is an integer ranging from 0 to 17. In certain embodiments, the metathesis catalyst is a tungsten catalyst or a molybdenum catalyst. In various embodiments, the fatty olefin derivative is a pheromone. Pheromone compositions and methods of using them are also described.
HIGHLY DISPERSED METAL SUPPORTED OXIDE AS NH3-SCR CATALYST AND SYNTHESIS PROCESSES
A process for preparing a catalyst material, includes: (a) providing a support material having surface hydroxyl (OH) groups, the support material is ceria (CeO.sub.2), zirconia (ZrO.sub.2) or a combination, and the support material contains between 0.3 and 2.0 mmol OH groups/g of the support material; (b) reacting the support material with at least one of: (b1) a compound containing at least one alkoxy or phenoxy group bound though its oxygen atom to a metal element from Group 5 (V, Nb, Ta) or Group 6 (Cr, Mo, W); (b2) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element from Group 5 or 6; (b3) a compound containing at least one hydrocarbon group bound though a carbon atom to a metal element which is copper (Cu); and (c) calcining the product obtained in step (b).
AMMONIA MANUFACTURING APPARATUS AND AMMONIA MANUFACTURING METHOD
An ammonia manufacturing apparatus includes: an electrochemical reaction unit including a first electrolytic bath for accommodating a first electrolytic solution, an oxidation electrode disposed in the first electrolytic bath, a second electrolytic bath for accommodating a second electrolytic solution containing nitrogen, an ammonia producing catalyst, and a reducing agent, a reduction electrode disposed in the second electrolytic bath, and a diaphragm, and configured to reduce nitrogen by the ammonia producing catalyst and the reducing agent in the second electrolytic bath to produce ammonia, and reduce the reducing agent oxidized due to the production of ammonia, at the reduction electrode by connecting the oxidation electrode and the reduction electrode to a power supply; a nitrogen supply unit including a nitrogen supply part for dissolving nitrogen in the second electrolytic solution; and an ammonia separation unit including a separation part configured to separate ammonia from the second electrolytic solution.
PROCESS FOR THE CARBONYLATION OF EPOXIDES
A process for the carbonylation of epoxides in the presence of catalyst systems, wherein the carbonylation takes place in the presence of carbon monoxide, and wherein the catalyst system contains a molybdenum-based compound. Carbonylation products as well as carbonylation derivatives and to the use of the claimed catalyst systems for the carbonylation of epoxides are also provided.
Metal ion-directed carboxylic acid functionalized polyoxometalate hybrid compounds and their preparation method and applications for catalyzing the degradation of chemical warfare agent simulants
Metal ion-directed carboxylic acid functionalized polyoxometalate hybrid compounds, and their preparation method and applications in catalyzing the degradation of chemical warfare agent simulants. In the synthesis, Na.sub.2MoO.sub.4, p-hydroxybenzonic acid (PHBA), alanine (Ala), KCl, transition metal cations and As.sub.2O.sub.3 as raw materials and water are used as solvent. At room temperature, 2-chloroethyl ethyl sulfide (CEES) and the prepared polyoxometalate hybrid compounds were mixed together in anhydrous ethanol and stirred, and H.sub.2O.sub.2 was subsequently added into the reaction system. The catalytic reaction for the degradation of CEES was finished within 5 min under stirring. In the catalytic hydrolysis of diethyl cyanophosphonate (DECP), the catalyst, DECP, DMF and H.sub.2O were put together and mixed fully. The prepared polyoxometalate hybrid compounds have the advantages of high conversion, high selectivity and easy recyclability in catalyzing the degradation of two types of chemical warfare agent simulant.