Abstract: A process for the synthesis of an unsaturated product by cross metathesis between a first unsaturated compound having at least 8 carbon atoms and a second unsaturated compound having less than 8 carbon atoms, the first unsaturated compound being capable of producing an unsaturated coproduct comprising more than 14 carbon atoms, by homometathesis, said process including at least one production phase which includes: feeding a reactor with the first unsaturated compound; feeding the reactor with the second unsaturated compound; feeding the reactor with at least a first metathesis catalysts, then feeding the reactor with at least a second metathesis catalyst; withdrawing a product stream arising from the reactor; the turnover number of the first catalyst being higher than the turnover number of the second catalyst so as to achieve the same target degree of conversion of the first unsaturated compound.

Abstract: A process for the synthesis of a monounsaturated nitrile-ester (acid) by cross metathesis starting from an unsaturated compound I including at least one trivalent nitrile, acid or ester functional group, wherein the process includes a stage in which two types of cross metathesis are alternated consecutively: — a first type of cross metathesis cm1 with an acrylic compound II chosen from acrylonitrile, acrylic acid or an acrylic ester, one of the compounds I or II including a nitrile functional group and the other of these compounds II or I including an acid or ester functional group, and—a second type of cross metathesis cm2 with a light C2 to C4 alkene compound III. Also, a process for the synthesis of an ?,?-amino ester (acid) obtained by a process including a stage in which the two types of cross metathesis defined above are alternated consecutively, followed by a hydrogenation stage.

Abstract: The present invention relates to a method for preparing fluorinated olefin compounds, in particular (chloro)fluoropropenes and (chloro)fluorobutenes, and specifically, the fluorinated compound 2,3,3,3-tetrafluoro-1-propene, including at least one step of fluorination, in the gaseous phase, with HF and at least one compound selected from the halopropenes having formula the CX3CHClCH2X and the halopropenes having the formulas CX3CC1?CH2, CClX2CCl?CH2 and CX2?CClCH2X, where X is, independently, a fluorine or chlorine atom, in the presence of oxygen and a fluorination catalyst suspended in a fluidized-bed reactor.

Abstract: A process for preparing a catalyst, including the reactive milling of a first reagent, which is a chromium oxide compound, with a second reagent, which is a compound of the formula MzM?1-zOxFy, M and M? each being an element having an oxidation state greater than or equal to 0, z being from 0 to 1, x being from 0 to 3, y being from 0 to 6, and 2x+y being greater than 0 and less than or equal to 6.

Abstract: A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier. A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, and firing the resulting solid mixture. A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.

Abstract: The invention is directed to a 14-hydroxyeicosanoic acid-based fatty acid amide which may be a monoamide or a diamide, and to the use thereof as an organogelling agent or agent, also referred to as a rheology additive, in particular in coating, molding, mastic or sealing compositions or cosmetic compositions.

Abstract: Disclosed herein is a method for producing alkoxy alkanes by direct partial oxidation of a lower alcohol with a catalyst based upon mixed oxide containing molybdenum and at least one other metal selected from the metals that can assume a trivalent oxidation state such as Fe, Bi, Al, Cr, In, La, Sb, and/or a metal selected from Ni, Co, Cu, V, W, Ti, Ta, Nb, Mn, Sn, P.

Abstract: The present invention concerns a method for directly synthesizing acrolein or methacrolein from a mixture of methanol and ethanol or propanol. The method of the invention comprises two successive phases: oxidation in the presence of a selective oxidation catalyst of the light alcohols of the feedstock, then condensation by aldolisation of the aldehydes formed during oxidation in the presence of a condensation catalyst (aldolisation). Alternatively, the two phases can be carried out in the presence of a single catalyst, in particular in the presence of a molybdenum-based selective oxidation catalyst. These two phases can be conducted in a single reactor or in two cascade reactors.

Abstract: A method and system for preparing a mixture of Guerbet alcohols where one or more primary alcohols of the formula RCH2CH2OH are provided, with R representing hydrogen or a straight or branched chain alkyl group of 1 to 14 carbon atoms. A base and a catalyst are provided, which are mixed with the primary alcohol(s). The resulting mixture is heated to a process temperature above the boiling point of water under reaction conditions and the water resulting from the thus obtained condensation and dehydration of the primary alcohols is then removed constantly. When the Guerbet reaction has reached a certain stage, at least part of the reaction mixture is removed, followed by a separation of the desired Guerbet alcohols from the removed part of the reaction mixture. The other alcohols are then returned to the reaction mixture for obtaining a higher amount of the desired Guerbet alcohols.

Abstract: A process including at least one reactive trituration step which includes putting an oil cake including from 3% to 30% oil in contact with an anhydrous light alcohol and an alkaline catalyst under temperature and time conditions that are sufficient to allow for the extraction and transesterification of the vegetable oil and lead to the production of a mixture including fatty acid esters and glycerol, and a de-oiled cake including less than 3% oil. Also, a detoxified de-oiled cake as well as to a mixture of fatty acid esters with improved stability and resistance to oxidation.

Abstract: The subject matter of the invention is a process for synthesizing a saturated long-chain ?,?-amino ester (acid) obtained in a first step by cross-metathesis between an acrylic first compound and a monounsaturated second compound comprising at least one nitrile, acid or ester trivalent function, one of these compounds comprising a nitrile function and the other an acid or ester function, in the presence of a ruthenium carbene metathesis catalyst, and in a second step by hydrogenation of the monounsaturated nitrile ester (acid) obtained in the presence of the metathesis catalyst of the preceding stop, acting as a hydrogenation catalyst.

Abstract: The present invention relates to an aviation fuel composition comprising an energy providing component that includes 70 to 99.9 vol. % of a hydrocarbon mixture, and 0.1 to 30 vol. % of an alcohol component selected from the group consisting of one or more Guerbet alcohols, having a number or mean value of number of carbon atoms, respectively, of equal to or less than 12, and optionally one or more aviation fuel additives. The invention further relates to a method for manufacturing the aviation fuel composition.

Abstract: The invention concerns a chemical reaction process performed in a reaction chamber (1) which contains a catalyst bed, the reaction chamber (1) comprising a first end (2) and a second end (3), opposite the first end (2), the process involving alternately: a reaction phase, in which a reaction flow passes through the reaction chamber (1) from its first end (2) towards its second end (3); and a catalyst-regeneration phase, in which a regeneration flow passes through the reaction chamber (1) from its second end (3) towards its first end (2). The reaction chamber (1) preferably consists of a plurality of separate reaction compartments containing a catalyst bed and a heat-exchange system for exchanging heat therebetween.

Abstract: The invention relates to a method for cleaving unsaturated fatty chains comprising a step of oxidative cleavage in which at least one fatty acid derivative having at least one unsaturation is reacted in the liquid phase with hydrogen peroxide in the presence of a catalyst for activating the reaction of oxidative cleavage and of molecular oxygen and in the absence of organic solvent.

Abstract: The invention relates to a method for the synthesis of diacids of general formula ROOC—(CH2)n—(CH?CH)a—(CH2)mCOOR1 in which n and m are identical or different and each represent an integer such that their sum is between 6 and 15, a is an index of 0 or 1, and R and R1 are H or an alkyl radical with 1 to 4 carbon atoms, from long-chain mono-unsaturated natural fatty acids or esters having at least 10 adjacent carbon atoms per molecule of the general formula CH3—(CH2)p—CH?CH—(CH2)q—COOR, p and q, being identical or different and representing indices between 2 and 11, wherein said method comprises the first step of oxidizing by fermentation said natural fatty acid or ester, using a microorganism, such as a bacterium, a yeast, or a fungus, into at least one unsaturated dicarboxylic acid or dicarboxylate, the second step of submitting the product from the first step to a metathesis crossed with a compound of formula R2OOC—(CH2)x—CH?CH—R3, in which R2 is H or an alkyl radical with 1 to 4 carbon atoms, x is 0 or 1 or

Abstract: The present invention relates to a method for preparing an aqueous solution of hydrogen peroxide from oxygen, hydrogen and optionally water. The invention more particularly relates to a method for preparing an aqueous solution of hydrogen peroxide in which at least a portion of the reactor is cooled down to a temperature lower than 15° C.

Abstract: Disclosed herein a process for the synthesis of diacids or diesters of general formula ROOC—(CH2)x-COOR, in which n represents an integer between 5 and 14 and R is either H or an alkyl radical of 1 to 4 carbon atoms, starting from long-chain natural monounsaturated fatty acids or esters comprising at least 10 adjacent carbon atoms per molecule, of formula CH3—(CH2)n-CHR1—CH2—CH?CH—(CH2)p-COOR, in which R represents H or an alkyl radical comprising from 1 to 4 carbon atoms, R1 is either H or OH, and n and p, which are identical or different, are indices between 2 and 11.

Abstract: The subject matter of the invention is a process for synthesizing ?-functionalized acids of formula R—(CH2)n—COOH in which R is COOH or NH2CH2, from a feedstock of natural origin containing hydroxylated fatty acids.

Abstract: A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier. A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, and firing the resulting solid mixture. A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.

Abstract: The invention relates to a method for the synthesis of dialkoxyalkanes by means of the partial selective oxidation of a light alcohol. According to said method, the light alcohol is oxidized in the presence of molecular oxygen or a gas containing molecular oxygen, and a solid oxidation catalyst based on at least one metal in a reactive medium comprising a gaseous phase containing an acid compound according to the Pearson classification, having a pKa of less than 6.3 in solution in water. The reaction is carried out in a vapor or in a liquid phase.