摘要:
The present invention provides a process for the preparation of metal-doped zeolites comprising the steps of i) provision of a dry mixture of a) a zeolite, b) a compound of a catalytically active metal, ii) intimate grinding of the mixture, iii) heating of the mixture in a reactor, iv) cooling to room temperature and obtaining the metal-doped zeolite, wherein the internal pressure in the reactor during the heating is kept in a pressure range from 0 to −200 millibar. The invention further relates to the use of a metal-doped zeolite prepared by means of the process according to the invention for the conversion of NOx and N2O into harmless products.
摘要:
The invention relates to the use of a catalyst based on crystalline aluminosilicates for the conversion of oxygenates to lower olefins, the catalyst having an SiO2/Al2O3 molar ratio of 20 to 200 and being modified with 0.1% to 10% by weight of readily oxidant metal (calculated as the corresponding metal oxide) and/or with 0.05% to 5% by weight of cerium (calculated as Ce2O3), and also to an associated method.
摘要翻译:本发明涉及使用基于结晶硅铝酸盐的催化剂用于将含氧化合物转化为低级烯烃的催化剂,所述催化剂的SiO 2 / Al 2 O 3摩尔比为20至200,并用0.1重量%至10重量%的容易氧化金属 (以相应的金属氧化物计算)和/或以0.05重量%至5重量%的铈(以Ce 2 O 3计),以及相关方法。
摘要:
The present invention provides a process for the preparation of metal-doped zeolites comprising the steps of i) provision of a dry mixture of a) a zeolite, b) a compound of a catalytically active metal, ii) intimate grinding of the mixture, iii) heating of the mixture in a reactor, iv) cooling to room temperature and obtaining the metal-doped zeolite, wherein the internal pressure in the reactor during the heating is kept in a pressure range from 0 to −200 millibar. The invention further relates to the use of a metal-doped zeolite prepared by means of the process according to the invention for the conversion of NOx and N2O into harmless products.
摘要:
The present invention relates to a catalyst comprising a macroporous noble metal-containing zeolite material and a porous SiO2-containing binder, wherein the catalyst has a proportion of micropores of more than 70%, based on the total pore volume of the catalyst. The invention is additionally directed to a process for preparing the catalyst and to the use of the catalyst as an oxidation catalyst.
摘要:
The invention relates to a method for producing titano-(silico)-alumino-phosphate, a catalyst shaped body which contains titano-(silico)-alumino-phosphate, a washcoat containing titano-(silico)-alumino-phosphate, the use of the washcoat to produce a catalyst by coating a support body, and to the use of titano-(silico)-alumino-phosphate or of the catalyst shaped body to produce a catalyst.
摘要:
The present invention relates to a shaped catalyst body comprising a core and a first catalytically active layer arranged on sections of the core, characterized in that the total density of the core is greater than the total density of the catalytically active layer. The invention further relates to the use of said shaped catalyst body as an oxidation catalyst in the cleaning of exhaust gases or for reducing and decomposing nitrogen oxides and nitrous oxide.
摘要:
The present invention relates to a metal-doped or metal-exchanged zeolite, respectively, wherein the doping metal is present in the zeolite in the form of individual atoms i.e. as monomeric and/or dimeric species. The invention further relates to a process for the preparation of such a metal-exchanged zeolite. Said metal-doped zeolites are useful, in particular, for the reduction of nitrogen oxides.