摘要:
Wood preservatives for protecting wood or wood-base materials against animal pests, and which contain a perfluoroalkane sulfonate of the formula C.sub. n F.sub.2n+1 --SO.sub.3 M where n is one of the integers from 1-14 and M denotes hydrogen or a cation, and a process for protecting wood or wood-base materials against animal pests with these compounds.
摘要:
A catalyst for decomposing dinitrogen monoxide which is pure or present in gas mixtures comprises metallic silver applied to an alumina carrier with a BET surface area of from 5 to 25 m.sup.2 /g.
摘要:
Medicinal white oils and medicinal paraffins are prepared from petroleum fractions containing aromatics and nitrogen, oxygen and sulfur compounds, e.g. light and heavy atmospheric gas oils, vacuum gas oils and residues, which have been pretreated in a first stage by acid treatment or catalytic hydrogenation, by hydrogenation in a second stage over a nickel-containing catalyst under from 50 to 200 bar and at elevated temperatures, by a process in which the catalyst used in the second stage and present in the oxide form is reduced with a hydrogen-containing gas, passivated and then again activated with hydrogen, before the hydrogenation to medicinal white oils or paraffins is carried out.
摘要:
A process for the preparation of zeolites of the ZSM-5 structural type from a mixture of SiO.sub.2 and Al(OH).sub.3 by hydrothermal crystallization in an aqueous amine solution, in the absence of alkali, at from 100.degree. to 200.degree. C., wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formulated to have an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H.sub.2 O/amine and amine/Al.sub.2 O.sub.3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics.
摘要翻译:在不存在碱的情况下,在100〜200℃下,通过在胺水溶液中水热结晶,从SiO 2和Al(OH)3的混合物中制备ZSM-5结构型沸石的方法, 其中所述结晶在三胺,四胺和/或更高级胺的存在下进行,并且所述反应混合物被配制成具有由包含胺的链长度和胺基数的方程定义的SiO 2 / Al 2 O 3摩尔比 以及具有一定摩尔比的H 2 O /胺和胺/ Al 2 O 3,以及这些沸石作为用于将醇和/或二烷基醚转化为烯烃和/或芳族化合物的催化剂的用途。
摘要:
The Al.sub.2 O.sub.3 carrier material from Ag/Al.sub.2 O.sub.3 supported catalysts which is obtained after the silver has been removed from such spent catalysts in a conventional manner is regenerated by a method in which the carrier material(a) is treated with an aqueous solution of a water-soluble salt or hydroxide of a metal of group IIA, IIIB or IVB of the Periodic Table or of aluminum, copper, manganese, zinc, cadmium, tin or lead, and the material treated in this manner is then dried, and/or the material(b) is heated at 750-1,500.degree. C. for not less than 10 minutes.
摘要翻译:通过常规方法从这种废催化剂除去银后获得的Ag / Al 2 O 3载体催化剂的Al 2 O 3载体材料通过其中载体材料(a)用水溶液处理的方法再生, 然后将经过该方法处理的物质的铝,铜,锰,锌,镉,锡或铅的IIA,IIIB或IVB族金属的可溶性盐或氢氧化物干燥,和/或材料 (b)在750-1,500℃下加热不少于10分钟。
摘要:
Oxidation catalysts which in addition to oxygen ions, with or without NH.sub.4.sup.+ ions, contain molybdenum, tungsten, phosphorus and antimony as basic components, in the atomic ratio Mo:W:P:Sb=12:0.1-3:0.1-4:0.1-3, and which are prepared in a conventional manner by combining molybdenum, phosphorus, antimony and tungsten compounds in aqueous solutions or suspensions, removing the water and calcining the residues, the combination being carried out at chloride ion concentrations of less than 0.3 mole per mole of molybdenum and in the presence of ions of monocarboxylic acids of 1 or 2 carbon atoms, dicarboxylic acids or hydroxycarboxylic acids, are particularly suitable for the gas phase oxidation of methacrolein to methacrylic acid.
摘要:
A process for the preparation of zeolites of the ZSM-5 structural type from a mixture of SiO.sub.2 and Al(OH).sub.3 by hydrothermal crystallization in an aqueous amine solution, in the absence of alkali, at from 100.degree. to 200.degree. C., wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formulated to have an SiO.sub.2 /Al.sub.2 O.sub.3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H.sub.2 O/amine and amine/Al.sub.2 O.sub.3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics
摘要翻译:在不存在碱的情况下,在100〜200℃下,通过在胺水溶液中水热结晶,从SiO 2和Al(OH)3的混合物中制备ZSM-5结构型沸石的方法, 其中所述结晶在三胺,四胺和/或更高级胺的存在下进行,并且所述反应混合物被配制成具有由包含胺的链长度和胺基数的方程定义的SiO 2 / Al 2 O 3摩尔比 并且具有一定摩尔比的H 2 O /胺和胺/ Al 2 O 3
摘要:
Crystalline isotactic zeolites having the composition2/.pi.R.multidot.W.sub.2 O.sub.3 .multidot.m YO.sub.2 .multidot.p H.sub.2 Owhere R is an organic amine and n is the number of amine groups in the amine molecule, W is one or more of the elements B, Al, Ga and Fe and Y is Si and/or Ge, and a process for the preparation of these crystalline isotactic metal silicate zeolites from mixtures of YO.sub.2 and W(OH).sub.3 by hydrothermal crystallization at from 100.degree. to 200.degree. C. with the aid of an organic amine, in the absence of an alkali metal base, alkaline earth metal base or quaternary nitrogen base or their intermediates, the number m depending on the chain length of the organic amine used in the crystallization.
摘要翻译:具有组成2 / pi RxW2O3xm YO2xpH2O的结晶全同立构沸石,其中R是有机胺,n是胺分子中的胺基数,W是元素B,Al,Ga和Fe中的一种或多种,Y是Si 和/或Ge,以及通过在100℃至200℃下借助于有机胺通过水热结晶从YO 2和W(OH)3的混合物制备这些结晶全同立构金属硅酸盐沸石的方法, 不存在碱金属碱,碱土金属碱或季氮碱或其中间体,其数量取决于用于结晶的有机胺的链长。
摘要:
A catalyst for the manufacture of ethylene oxide, giving improved yield and having a long life, based on an alkali metal-modified silver catalyst on an oxide carrier is obtained by providing the silver-containing catalyst, in the reduced state, with the alkali metal by applying an alcoholic alkali metal salt solution which also contains an organic oxygen compound or nitrogen compound which forms complexes with silver ions.
摘要:
A two-stage process for the manufacture of methane from hydrocarbons is described. In the first stage, the hydrocarbons are converted into methane-rich gases, using the nickel catalyst described below. The cracked gases thus obtained are cooled and converted into methane-rich gases in a further catalytic process stage, using a methanization catalyst or the nickel catalyst mentioned below. To produce the nickel catalyst, the compound Ni.sub.6 Al.sub.2 (OH).sub.16.CO.sub.3.4H.sub.2 O is prepared in aqueous solution. The catalyst is obtained from this compound by drying, calcination and subsequent reduction in a stream of hydrogen whilst maintaining very specific temperature gradients between the drying stage and the calcination stage.