Abstract:
The invention relates to a catalyst for partially oxidizing hydrocarbons in the gas phase, containing a multi-metal oxide of the general formula (I), AgaMObVcMdOe * f H2O (I), wherein M stands for at least one element selected from among Li, Na, K, Rb, Cs, Be, Mg, Ca, Sr, Ba, B, AI, Ga, In, Si, Sn, Pb, P, Sb, Bi, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, W, Mn, Re, Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt, Cu, Au, Zn, Cd, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and U, a has a value of 0.5 to 1.5, b has a value of 0.5 to 1.5, c has a value of 0.5 to 1.5, a+b+c has the value 3, d has a value of less than 1, e means a number that is determined by the valence and frequency of the elements other than oxygen in the formula (I), f has a value of 0 to 20, which multi-metal oxide exists in a crystal structure, the X-ray powder diffractogram of which is characterized by diffraction reflections at a minimum of 5 lattice distances selected from among d = 4.53, 3.38, 3.32, 3.23, 2.88, 2.57, 2.39, 2.26, 1.83, 1.77 Å (± 0.04 Å).
Abstract translation:一种用于烃的气相部分氧化催化剂包括通式(I)的多金属氧化物,AgaMObVcMdOe * F H 2 O(I)其中M是其中锂,钠,钾,铷,铯,铍,镁,钙的至少一个, 锶,钡,硼,铝,镓,铟,硅,锡,铅,磷,锑,铋,Y,钛,锆,铪,钒,铌,钽,铬,钨,锰,RE,铁,钌, 锇,钴,铑,铱,镍,钯,铂,铜,金,锌,镉,镧,铈,镨,钕,钐,铕,钆,铽,镝,钬,铒,铥,镱,路, U被选择的元素,一个具有0.5至1.5的值; b为0.5〜1.5的值,c具有从0.5至1.5,A + b + C的值 是3,D具有小于1的值,例如确定由其中,F为0至20的值,式(I)中氧以外的元素的化合价和频率定义的一个数,在 的晶体结构存在,其粉末X至少为5,在D的特征在于衍射峰= 4.53,3.38,3.32,3.23,2.88,2.57,2.39,2.26,1, 83,1.77埃(±0.04 A)中的晶面间距。
Abstract:
The present invention relates to a method for producing a layer containing at least one semiconductive metal oxide on a substrate, comprising at least the steps of: (A) producing a solution containing at least one precursor compound of the at least one metal oxide selected from the group of carboxylates from monocarboxylic, dicarbonic, or polycarboxylic acids with at least three carbon atoms or derivatives of monocarboxylic, dicarbonic, or polycarboxylic acids, alcoholates, hydroxides, semicarbazides, carbamates, hydroxamates, isocyanates, amidins, amidrazones, carbamide derivatives, hydroxylamines, oximes, urethanes, ammonia, amines, phosphines, ammonium compounds, azides of the corresponding metal and compounds thereof, in at least one solvent; (B) application of the solvent of step (A) on the substrate; and (C) thermal treatment of the substrate of step (B) at a temperature of 20 to 200 degrees Celsius, in order to transfer the at least one precursor compound in at least one semiconductive metal oxide. In the event that in step (A), electrically neutral [(OH)x(NH3)yZn]z with x, y, and z independently from one another 0.01 to 10, is used as precursor compound, said precursor compound is obtained by conversion of zinc oxide or zinc hydroxide with ammonia; a substrate, which is coated with at least one semiconductive metal oxide, obtainable by said method; the application of said substrate in electronic components; and a method for producing electronically neutral [(OH)x(NH3)yZn]z with x, y, and z independently from one another 0.01 to 10, by conversion of zinc oxide and/or zinc hydroxide with ammonia.
Abstract:
The invention relates to a method for producing nanoscale metal oxide-filled polymers. Said method is characterized by the following steps: a) producing a nanosuspension of one or more crystalline metal oxides, metal hydroxides or metal oxide hydroxides by heating a suspension of one or more compounds containing the corresponding metals in a first polymerizable compound to a temperature higher than the boiling point of water at process temperature and lower than the boiling temperature of the first polymerizable compound and also lower than the temperature at which polymerization of the first polymerizable compound begins, in the presence of water in an amount corresponding to 1 to 10 oxygen atoms per metal atom of the compound or of the compounds containing the corresponding metals, and b) polymerization of the first polymerizable compound under the conditions of temperature and pressure conventional for the first polymerizable compound.
Abstract:
A catalyst for the gas phase oxidation of organic hydrocarbons comprises a multielement oxide which comprises at least one transition meal such as vanadium, wherein the catalyst has a charge transport activation energy Ec at a temperature of 375 to 425°C of less than 0 kJ/mol. The catalyst serves for preparation of maleic anhydride.
Abstract:
The present invention relates to a method for producing cosmetic preparations containing metal oxide, wherein the reaction mixture developing during the production of the particulate metal oxide is added to the cosmetic preparations substantially without further processing.
Abstract:
Dispersions comprising functionalized metal oxide particles, polymerizable compounds and optionally a solvent, and the use thereof for stabilizing polymers.
Abstract:
The invention discloses particles P, which can be obtained by the reaction of inorganic nanoparticles N with organic molecules M, which contain functional groups Z, wherein: a) said inorganic nanoparticles N are provided in a dispersion D, through the reaction of compounds V in a solvent, and b), immediately after step (a), said organic molecules M are added to said dispersion D. Furthermore, the invention discloses liquid and solid formulations, containing particles P, methods for the production of particles P, method for suppressing the photocatalytic activity of inorganic nanoparticles N, methods for stabilizing UV absorbers, methods for stabilizing polymers against the effect of light, radicals, or heat, and the use of particles in cosmetic applications.
Abstract:
The present invention relates to a method for the continuous production of at least one metal oxide containing nanoparticles, consisting of the following steps: a) preparation of a reaction mixture containing at least one precursor compound of the at least one metal oxide and at least one oxygen donor in a solvent which contains at least one polyol, at a temperature T1 from 0°C to 150°C; b) heating of the reaction mixture prepared in step a) to a temperature T2 of 130°C to 350°C, wherein the at least one metal oxide containing nanoparticles is obtained; and c) cooling down of the reaction mixture from step b) containing the nanoparticles to a temperature T3 of 0°C to 70°C.
Abstract:
The present invention relates to methods for the production of surface-modified, nanoparticulate particles of at least one metal oxide, metal hydroxide and/or metal oxyhydroxide and of aqueous suspensions of said particles. The invention also relates to the surface-modified, nanoparticulate particles of at least one metal oxide, metal hydroxide and/or metal oxyhydroxide and to the aqueous suspensions of said particles which can be obtained by these methods and their use for cosmetic sunscreen preparations, as stabilisers in plastics and as active antimicrobial active substance.
Abstract:
catalisador com invólucro, processo para preparar nácido acrílico, uso de catalisadores com invólucro. a invenção refere-s ea um conversor catalítico do tipo casca fabricado de um corpo carregador cilíndrico oco tendo um comprimento de 2 a 10mm, um diâmetro externo de 4 a 10mm, e uma espessura de parede de 1 a 4m, e casca fabricada de uma massa de óxido cataliticamente ativo aplicada à superfície externa do corpo carregador, a dita massa tendo a fórmula geral (i): mo~ 12~v~ 2 a 4~ w~ 0 a 3~ cu~ 0,8 a 1,5~ x^ 1^~ 0 a 4~ x^ 2^~ 0 a 40~ o~ n~ (i) onde as variáveis tendo os significados seguintes: x^ 1^= um ou mais elementos dos metais alcalinos e metais alcalinos terrosos; x^ 2^= um ou mais elementos do grupo de si, al, ti e zr; e n= o coeficiente estequiométrico do oxigênio elementar, que pe determinado pelos coeficientes estequimétricos dos elementos exceto oxigênio e pelos números de carga destes em i.