摘要:
A catalyst of the invention includes an imide compound having a N-substituted cyclic imide skeleton represented by following Formula (I): 1 wherein R is a hydroxyl-protecting group. Preferred R is a hydrolyzable protecting group. R may be a group obtained from an acid by eliminating an OH group therefrom. Such acids include, for example, carboxylic acids, sulfonic acids, carbonic acid, carbamic acid, sulfuric acid, nitric acid, phosphoric acids and boric acids. The catalyst may include the imide compound and a metallic compound in combination. In the presence of the catalyst, (A) a compound capable of forming a radical is allowed to react with (B) a radical scavenging compound and thereby yields an addition or substitution reaction product of the compound (A) and the compound (B) or a derivative thereof. This catalyst can produce an organic compound with a high selectivity in a high yield as a result of, for example, an addition or substitution reaction under mild conditions.
摘要:
A process of the present invention produces an organic compound by allowing a compound containing an electron attractive group of following Formula (1): 1 wherein Y is an electron attractive group; and Rb and Rc are each a hydrogen atom or an organic group, where Y, Rb and Rc may respectively be combined with each other to form a ring with an adjacent carbon atom, to react with a compound containing an unsaturated carbon-carbon bond of following Formula (2) or 2 wherein Rd, Re, Rf, Rg, Ri and Rj are each a hydrogen atom or an organic group, where Rd, Re, Rf and Rg may respectively be combined to form a ring with one or two adjacent carbon atoms, and Ri and Rj may be combined to form a ring with adjacent two carbon atoms, in the presence of oxygen and a catalytic compound of a Group 5, 6, 7, 8 or 9 element of the Periodic Table of Elements to yield a compound of following Formula (3) or (8): 3 wherein Z is a hydrogen atom or a hydroxyl group; and Y, Rb, Rc, Rd, Re, Rf, Rg, Ri and Rj have the same meanings as defined above. This process can efficiently produce a compound having an alkyl group or alkenyl group bonded at the alpha position of an electron attractive group, or a derivative thereof, by catalytic radical addition reaction.
摘要:
Cyclohexanone, cyclohexanol and/or cyclohexyl hydroperoxide are prepared at a high productivity by allowing cyclohexane to be in contact with an oxygen-containing gas using a catalyst comprising a cyclic N-hydroxyimide and a transition metal compound in the presence of cyclohexanone and optional cyclohexanol.
摘要:
Catalysts for oxidative dehydrogenation of alkane to one or more olefins, exemplified by ethane to ethylene, are disclosed. The catalyst comprises a mixture of metal oxides having as an important component nickel oxide (NiO) and gives high conversion and selectivity. For example, the catalyst can be used to make ethylene by contacting it with a gas mixture containing ethane and oxygen. The gas mixture may optionally contain ethylene, an inert diluent such as nitrogen, or both ethylene and an inert diluent.
摘要:
In a process for the preparation of acrolein and/or acrylic acid from propane, the propane is subjected, in a first reaction stage, to a partial oxydehydrogenation with molecular oxygen under homogeneous and/or heterogeneous catalysis to give propene and the product gas mixture formed in the first reaction stage is then used for the preparation of acrolein and/or acrylic acid by gas-phase catalytic propene oxidation.
摘要:
The multimetal oxide materials essentially consisting of Mo12BiaX1bFecX2dX3eOy (I) where: X1 is Co and/or Ni, X2 is Si and/or Al, X3 is an alkali metal, 0.3≦a≦1, 2≦b≦10, 0.5≦c≦10, 0≦d≦10, 0≦e≦0.5 and y is the absolute value of the number which, assuming charge neutrality, is obtained from the sum of the valences and the stoichiometric coefficients of the other elements, the crystalline fractions containing, in addition to &bgr;-X1MoO4 as the main component, Fe2(MoO4)3 as a secondary component and no MoO3.
摘要翻译:基本上由以下组成的多金属氧化物材料:X1是Co和/或Ni,X2是Si和/或Al,X3是碱金属,0.3 <= a <= 1,2 <= b <= 10,0.5 <= c <= 10,0 <= d <= 10,0 <= e <= 0.5,并且假定电荷中性是从其他元素的化合价和化学计量系数的和获得的数的绝对值, 除了以β-X1MoO4为主要成分之外,还含有Fe2(MoO4)3作为次要组分而不含MoO 3的结晶组分。
摘要:
A method for oxidizing an alkane, comprising the step of oxidizing said alkane with oxygen in the presence of an aldehyde, a copper-based catalyst and a nitrogen-containing compound. This method may be used to convert alkanes to corresponding alcohols and ketone having pharmaceutical activities, etc.
摘要:
A process for preparing a catalyst is disclosed. The catalyst is useful for the gas phase oxidation of alkanes to unsaturated aldehydes or carboxylic acids or for the ammoxidation of alkanes to unsaturated nitrites.
摘要:
Organic molecules are partially oxidized in that the gas phase on supported and immobilized photocatalysts deposited having a nanostructure. the photocatalysts are semiconductors such as titanium dioxide and are preferentially coated onto a substrate by flame aerosol coating.
摘要:
The invention provides catalysts for oxidative dehydrogenation of lower alkanes, said catalysts being suitable for use in vapor phase oxidative dehydrogenation of C2-C5 lower alkanes in the presence of molecular oxygen to produce corresponding olefins and characterized by having a composition expressed by a general formula (I) below: MnnullE1nullE2nullOxnullnull(I) (in which Mn denotes manganese, and O, oxygen; E1 is at least one element selected from the group consisting of P, As, Sb, B, S, Se, Te, F, Cl, Br, I, Nb, Ta, W, Re and Cu; E2 is at least one element selected from the group consisting of Cr, Fe, Co, Ni, Ag, Au, Zn, Tl, Sn, Pb, Bi, Li, Na, K, Rb, Cs, Mg, Ca, Sr, Ba, Y, La, Ce, Nd and Sm; and null, null, null and x denote atomic numbers of Mn, E1, E2 and oxygen, respectively, where when nullnull1, nullnull0.01-10, nullnull0-5, and x is a numerical value determined by the state of oxidation of those elements other than oxygen). When these catalysts are used in reactions for oxidizing and dehydrogenating C2-C5 alkanes with molecular oxygen at vapor phase, corresponding olefins can be produced at high yield.