摘要:
A method for the catalytic epoxidation of olefins with hydrogen peroxide in the presence of rhenium-oxo-complexes or of a binuclear compound of the type .mu.-oxobis [porphyrinato-oxo-rhenium(V)] with octaethyl porphyrin or 5,10,15,20-tetraphenyl porphyrin or 5,10,15,20-tetra(4-pyridyl)-porphyrin as ligands.
摘要:
Rhenium-oxo complexes withoctaethyl porphyrin or5,10,15,20-tetraphenyl porphyrins or5,10,15,20-tetra(4-pyridyl)-porphyrins as ligandswhich optionally carry an anion on the central atom. Methods of preparing the complexes are also disclosed.
摘要:
A method for the catalytic epoxidation of olefines with hydrogen peroxide in the presence of tungsten oxo complexes or of a binuclear compound of the type .mu.-oxobis [porphyrinato-oxo tungsten (V)] or cis-oxo peroxo tungsten (VI) prophyrin or cis-dioxo porphyrinatotungsten (VI) with octaethyl porphyrin or 5,10,15,20-tetraphenyl porphyrin or 5,10,15,20-tetra(4-pyridyl)-porphyrin as ligands.
摘要:
A catalyst is described for the production of unsaturated aldehydes by means of oxidation with a oxygen-containing gas where an active mass, containing at least the elements Mo, Bi, P and O, as well as Si-containing carrier material, is used in the form of a catalyst body with a certain ratio between the outer surface and the volume and with a defined extent in terms of space, porosity, density, specific surface, breaking strength, abrasion, and gas through-flow capability. Also described is a method of making the catalyst.
摘要:
A process for the preparation of expoxidized organosilicon compounds by reacting the corresponding unsaturated organosilicon compounds with perpropionic acid in benzene solution. The said solution can also be employed in purified form with maximum contents of hydrogen peroxide, water, or mineral acid.
摘要:
The present invention relates to a process for the production of acrolein by catalytic gas-phase oxidation of propene with air in the presence of steam and an inert gas or waste gas from the reaction, the starting materials being passed in defined quantitative ratios at 300.degree. to 380.degree. C. under 1.4 to 2.2 bar pressure over a catalyst containing the combination of elements MoFeCoNiBiP(As)K(Rb,Cs)SmSiO in the form of a bed of individual elements, the catalyst elements fulfilling certain geometric conditions and a number of critical physico-chemical parameters and a specific load of 2 to 8 mol propene/dm.sup.3 catalyst bed/h being adjusted.
摘要:
A process for the production of 1,12-dodecanoic diacid by hydroformylating an olefin in the presence of a rhodium catalyst and oxidation with oxygen of the aldehyde which is thus formed wherein 1,9-decadiene is hydroformylated in the presence of hydridotris-triphenylphosphine-rhodium-carbonyl combined with triphenylphospine and/or triphenylphosphite, and the 1,12-dodecanedialdehyde which was thus formed is oxidized with oxygen in the presence of inorganic or organic Co(II) salts.
摘要:
A process for the production of 1,12-dodecanoic diacid by hydroformylating an unsaturated carboxy compound in the presence of a rhodium catalyst and oxidation of the aldehyde with oxygen, wherein undecyl-10-ene-acid is hydroformylated in the presence of hydridotristriphenylphosphine-rhodium-carbonyl combined with triphenylphosphine and/or triphenylphosphite, and the 11-formyl undecanioc acid which is thus formed is oxidized with oxygen in the presence of inorganic and organic Co(II) salts.
摘要:
Epoxidized polybutadienes with an average molecular weight of 500 to 100,000 and a certain content of epoxide oxygen were prepared from the corresponding polybutadienes with use of perpropionic acid in a benzene solution. The solution can also be employed in unpurified form with maximum contents of 1.5 weight percent hydrogen peroxide 1.5 weight percent of water, and about 800 ppm of mineral acid.
摘要:
The method for the isomerization of oxiranes of the general formula: ##STR1## wherein R.sub.1 and R.sub.3 are hydrogen; R.sub.2 is alkyl or alkylene groups of 3 to 26 carbon atoms or the phenyl group which may also be substituted, and R.sub.4 is hydrogen or alkyl from 1 to 26 carbon atoms and in which the carbon atoms of the epoxy ring can also form components of a cyclic system, wherein as a catalyst there is used alkali iodide and a polyethyleneglycol with an average mol mass of 400 to 10,000 with a boiling point, preferably above the boiling point of the carbonyl compounds that are formed.
摘要翻译:环烷烃的异构化方法,其通式如下:其中R1和R3是氢; R 2为3〜26个碳原子的烷基或亚烷基或可被取代的苯基,R 4为氢或1〜26个碳原子的烷基,其中环氧环的碳原子也可以形成 其中作为催化剂使用碱金属碘化物和平均摩尔质量为400至10,000的聚乙二醇,其沸点,优选高于形成的羰基化合物的沸点。