摘要:
The present invention relates to a preparation process of azo compounds which comprises the reaction between at least: one amine or polyamine, molecular oxygen, a catalyst formed by at least one support selected from among at least one metal oxide of one of the elements of groups 3, 4, 5, 6, 8, 9, 11 and 13, silica, anionic laminar compound of hydrotalcite type or its derivatives, active carbon or an organic polymer. In addition, said catalyst may contain gold nanoparticles.
摘要:
The present invention relates to processes for producing 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-butenal and 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol using heterogeneous bifunctional catalysts with a good yield. There is provided a process for producing 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-butenal by the cross-aldol condensation between campholenic aldehyde and butanal using bifunctional heterogeneous catalysts in the presence of controlled amounts of an aliphatic alcohol; and a process for producing 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol useful as perfume, starting from 2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-butenal through a MPV reduction using an acid-base bifunctional heterogeneous catalyst. Both process can be coupled in a cascade process which involves the cross-aldol condensation between campholenic aldehyde and butanal followed by the Meerwein-Ponndorf-Verley (MPV) reduction in the presence of a secondary alcohol using the same heterogeneous bifunctional catalyst for obtaining (2-ethyl-4-(2,2,3-trimethyl-3-cyclopenten-1-yl)-2-buten-1-ol).
摘要:
The invention relates to a method for the epoxidation of an olefinic compound, which is characterised in that it comprises an oxidation reaction of at least one olefinic compound containing one or more double bonds C═C with oxygen in the presence of one or more reaction initiating agents, at least one catalyst containing at least one metal that is selected from a noble metal, a transition metal and mixtures of same, and at least one hydrocarbon that is selected from one or more branched alkanes, one or more alkyl cyclic or cyclic hydrocarbons, one or more alkyl aromatic or aromatic compounds and mixtures of same.
摘要:
The present invention relates to a microporous crystalline material characterized in that it has the following chemical composition in the calcined from: xX2O3:nYO2:mGeO2 in which (n+m) is at least 5, X is one or more trivalent elements, Y corresponds to one or more tetravalent elements other than Ge, “x” may have any value, including zero, and the ratio Y/Ge is greater than 0.1, and it has a characteristic X-ray diffraction pattern. Its also relates to a method for preparing it and to its use in the conversion of organic-compounds supplies.
摘要:
The invention relates to a process for producing fluorinated carbamates comprising the reaction between an amine or polyamine and a fluorinated carbonate, in the presence of a catalyst which does not contain metals and comprises at least one tertiary amine group. The process can also comprise an additional step in which the carbamates are transformed into the corresponding isocyanates.
摘要:
A crystalline microporous material of zeolitic nature (ITQ-41) having in its calcined form a chemical composition represented by the empirical formula: x(M1/nXO2):yYO2:SiO2 wherein, Y is a chemical element other than Silicon with oxidation status +4; X is a chemical element with oxidation status +3; M is H+ or an inorganic cation with charge n+; n can take any value between 1 to 3; x can take any value comprised between from about 0 to about 0.2; preferably lower than 0.0666, and more preferably lower than 0.05; y can take any value comprised between 0 and 0.2, and wherein, said material is characterized by the presence of four reflections in its powder X-Ray diffraction pattern at 6.9°; 7.4°; 8.3°, and 9.6°2θ angles.
摘要翻译:沸石性质的结晶微孔材料(ITQ-41),其煅烧形式为经验式表示的化学组成:<?in-line-formula description =“In-line formula”end =“lead”?> x( M 1 / n XO 2 2):y Y 2 2:SiO 2 <β在线公式描述= “In-line Formulas”end =“tail”?>其中,Y是氧化状态+4以外的硅以外的化学元素; X是氧化态为+3的化学元素; M是H + H +或具有电荷n +的无机阳离子。 n可以取1到3之间的任何值; x可以取约0至约0.2之间的任何值; 优选低于0.0666,更优选低于0.05; y可以取0至0.2之间的任何值,并且其中所述材料的特征在于在其粉末X射线衍射图中在6.9°存在四次反射; 7.4°; 8.3°和9.6°2θ角。
摘要:
The invention relates to an electroluminescent organic-inorganic hybrid material which is characterised in that it comprises: at least one microporous or mesoporous solid having a structure that is selected from among the structures of zeolites, porous oxides, molecular sieves, silicoaluminophosphates and aluminosilicates; and at least one organic compound which confers electroluminescent properties thereto. The invention is also characterised in that the organic compound is a polycyclic aromatic hydrocarbon, at least part of which is joined to the structure of the microporous or mesoporous solid using covalent bonds. The invention also relates to the method of obtaining said material and to the use thereof.
摘要:
The invention relates to a catalytic method for the transalkylation/dealkylation of organic compounds, consisting in bringing a supply comprising organic compounds into contact with a catalyst containing a first zeolitic component that is selected from among: a) one or more zeolites having crystalline structure ITQ-13; b) one or more zeolites having crystalline structure ITQ-13, which are modified either by means of selectivation or with the incorporation of one or more metals, or both; and c) a mixture of a) and b). The invention also relates to a catalyst comprising one or more modified zeolites having crystalline structure ITQ-13.
摘要:
The invention relates to a microporous crystalline zeolite material, zeolite ITQ-28, the production method thereof and the use of same. More specifically, the invention relates to a microporous crystalline zeolite material, ITQ-28, which, in the calcined state and in the absence of defects in the crystalline lattice thereof, manifested by the presence of silanols, is characterised by having empirical formula x (M1/nXO2): y YO2: SiO2, wherein: M is selected from H+, at least one inorganic cation with charge +n, preferably alkalines or alkaline earths, and a mixture of both; X is at least one chemical element in oxidation state +3, preferably Al, Ga, B, Fe, Cr or mixtures thereof; Y is at least a chemical element in oxidation state +4, which is different from Si, preferably Ge, Ti, Sn, V or mixtures of same; x has a value of between 0 and 0.2 inclusive; and y has a value of between 0 and 0.1 inclusive. The invention is further characterised in that the material as it is synthesised has an x-ray diffraction pattern with at least values of angle 2θ (degrees) and the relative intensities given in table 1. The invention also relates to the method of preparing said material and to the use thereof in the conversion of organic compounds.
摘要翻译:本发明涉及微孔结晶沸石材料,沸石ITQ-28,其制备方法及其用途。 更具体地说,本发明涉及一种微孔结晶沸石材料ITQ-28,其在煅烧状态中并且在其不存在其晶格缺陷的情况下,通过硅烷醇的存在而表现出来,其特征在于具有经验式x( M 1 / n 2 XO 2):y Y 2 O 2 SiO 2其中:M选自H 至少一种带电荷的无机阳离子,优选碱金属或碱土金属,以及二者的混合物; X是氧化态+3,优选Al,Ga,B,Fe,Cr或其混合物中的至少一种化学元素; Y至少是氧化态+4的化学元素,其不同于Si,优选Ge,Ti,Sn,V或其混合物; x的值在0和0.2之间; y的值在0和0.1之间。 本发明的特征还在于其合成的材料具有x射线衍射图,其至少具有角度2θ(度)和表1中给出的相对强度。本发明还涉及制备所述材料的方法 以及其在有机化合物的转化中的用途。
摘要:
The present invention concerns a process for oxidative desulphurization of hydrotreated hydrocarbon mixtures which boil within the range of 180° to 360° C., containing less than 350 ppm of sulphur as thiophenic compounds, said process comprising the steps of a) putting these mixtures in contact, in the presence of an organic peroxide, with a catalytic composition comprising a completely amorphous micro and/or mesoporous mixed oxide containing an oxide matrix selected from silica, alumina, ceria, magnesia and mixtures of thereof, wherein one or more oxidative metal oxides selected from transition metal oxides and group IVA metal oxides are uniformly dispersed, and b) separating the obtained corresponding sulphur oxygenated products from the hydrocarbon mixture.