摘要:
Novel cyclic N,N,N' and N,N,N',N'-substituted organyloxysilyl-functional silanes are prepared by reacting an aminopropyl silane with carbon disulfide and heating the dithiocarbamate.
摘要:
A method for producing tetrapropylammonium bromide by reacting tripropylamine with propyl bromide in a polar solvent at a temperature between 60.degree. and 160.degree. C.
摘要:
Alcohols and/or aliphatic ethers are converted to hydrocarbons employing catalysts consisting of crystalline aluminum silicate, a compound of zinc and/or cadmium and additional silica. The catalyst is produced by treating a crystalline aluminum silicate, in a given case, partially or completely converted into the hydrogen form with a zinc or cadmium compound and shaping with a silica containing binder.
摘要:
There are described luminescent glasses having the following compositions(a) 0 to 80 mole % alkali metal oxide (sodium oxide, potassium oxide, lithium oxide), individually or several together, 0 to 30 mole % alkaline earth metal oxide (magnesium oxide, calcium oxide, strontium oxide, barium oxide), individually or several together, and at least 2 mole % of alkali metal oxide and/or alkaline earth metal oxide must be present(b)7 to 90 mole % silica1 to 50 mole % boron oxide (B.sub.2 O.sub.3)1 to 30 mole % aluminum oxide(c)0.1 to 5 mole % lead oxide (PbO)0.1 to 10 mole % vandium pentoxide (V.sub.2 O.sub.5).The glasses have white, yellow, or blue luminescence, depending on the PbO and V.sub.2 O.sub.5 content, at excitation with a wave length of 254 nm.
摘要翻译:描述了具有以下组成(a)0至80摩尔%碱金属氧化物(氧化钠,氧化钾,氧化锂),单独或几个,0至30摩尔%碱土金属氧化物(氧化镁,钙 氧化物,氧化锶,氧化钡),至少2摩尔%的碱金属氧化物和/或碱土金属氧化物必须存在(b)7〜90摩尔%二氧化硅1〜50摩尔%的氧化硼 (B2O3)1〜30摩尔%的氧化铝(c)0.1〜5摩尔%的氧化铅(PbO)0.1〜10摩尔%的五氧化二锑(V 2 O 5)。 根据PbO和V2O5含量,在波长为254nm的激发下,玻璃具有白色,黄色或蓝色发光。
摘要:
Activated carbon is produced from lignite coke. It is characterized by the product of the molasses number times the iodine number divided by 1000 being 350 to 1000 and/or the product of the molasses number times the methylene blue number divided by 10 being 500 to 1200. It is produced by adding aqueous alkali or alkaline earth carbonate solution and/or aqueous alkali or alkaline earth hydroxide solution by means of lance during the steam activation of lignite coke in a rotating tube.
摘要:
The invention is directed to N,N' and N,N',N'-substituted silylureas and a process for their production in which in a single step process there are reacted a halogenoalkylsilane or a halogenbenzylsilane with a primary or secondary amine and an alkali cyanate in equimolar amounts.
摘要:
Activated carbon is produced from lignite coke. It is characterized by the product of the molasses number times the iodine number divided by 1000 being 350 to 1000 and/or the product of the molasses number times the methylene blue number divided by 10 being 500 to 1200. It is produced by adding aqueous alkali or alkaline earth carbonate solution and/or aqueous alkali or alkaline earth hydroxide solution by means of lance during the steam activation of lignite coke in a rotating tube.
摘要:
There is produced coarse particle mordenite by treating a reaction mixture consisting essentially of on a molar basis 2.5-10 Na.sub.2 O, Al.sub.2 O.sub.3, 15-30 SiO.sub.2, 400-4000 H.sub.2 O, 5-30 NaCl in an autoclave at a temperature of 140.degree. to 180.degree. C. until formation of crystals separating the crystalline product, washing with water and drying.
摘要:
A catalyst for the production of hydrocarbon consists essentially of crystalline aluminum silicate, at least one compound of the metal zinc and/or cadmium and additionally silica. The catalyst is produced by heating a crystalline aluminum silicate, in a given case partially or completely converted to the hydrogen form, with a zinc and/or cadmium compound and molding with a silica containing binder.
摘要:
According to the invention there are produced sodium Zeolite A granulates having the following parameters:______________________________________ Adsorption Data: (p/po = 0.8, 20.degree. C.) ______________________________________ H.sub.2 O >22.0% NH.sub.3 >11.0% CO.sub.2 .ltoreq.0.1% O.sub.2 .ltoreq.0.1% N.sub.2 .ltoreq.0.1% Ar .ltoreq.0.1% CH.sub.3 OH .ltoreq.0.2% CH.sub.3 --CH.sub.2 --OH .ltoreq.0.2% ______________________________________ The zeolite granulate is produced by having zeolite A powder present in a mixer, adding alkali silicate solution, mixing until there are obtained zeolite granulates having a particle size of at least 0.1 mm, in a given case post-rolling the granulates, first drying the moist zeolite granulates with air in a fluidized bed drier at a temperature of 20.degree. to 39.degree. C., during which the carbon dioxide content of the drying air is adjusted to less than 200 ppm, subsequently drying in a second drying step at a temperature of 40.degree.-120.degree. C. and in a given case drying in a third drying step at 121.degree.-200.degree. C. under otherwise the same conditions and subsequently activating the thus obtained granulates at a temperature of at most 600.degree. C. in a rotary tube. The zeolite granulate is used in the production of insulating glass windows.