CAS: 11118-57-3; Chromic Oxide

专利信息

专利号:US-4360504-A
优先权日:1980-11-03
标 题 :Simultaneous destruction of trace components in the reaction off-gas from the synthesis of melamine
发明人：BLANCK KLAUS; DETHLEFSEN WINFRIED; JUNGBAUER ANTON; LEUTNER BERND; SCHIER ERNST-JUERGEN; SCHLIMPER HANS-ULRICH; SCHNEEHAGE HANS H
权利人:BASF AG
摘要:The reaction off-gas from the synthesis of melamine consists, after separating off the melamine, mainly of ammonia and carbon dioxide, with traces of hydrogen cyanide, isocyanic acid, urea and residual melamine. To remove these trace components, the off-gas is passed over a catalyst, containing copper oxide and/or iron oxide, in the presence of steam at from 100° to 500° C.

专利号:US-2016367971-A1
优先权日:2013-07-30
标题 :Catalyst and Method for Synthesis of Carbon Nanomaterials
发明人：ZHUO CHUANWEI; LEVENDIS YIANNIS
权利人:UNIV NORTHEASTERN
摘要:Methods for activating the surface of steel alloys to produce catalytic substrates for the synthesis of carbon nanomaterials by chemical vapor deposition are provided. Steel alloy substrates in a variety of forms are activated by brief (10 sec to 30 min) pre-treatment at high temperature (600-1000° C.) in an oxidizing environment (e.g., air) to activate the catalyst. Upon high temperature oxidative treatment, the initially smooth and protective chromium oxide coating layer of the steel alloy is destroyed, and the catalyst surface roughness progressively increases. Upon exposure of the pre-treated SS substrates to pyrolyzed hydrocarbon gases in nitrogen, carbon nanotubes are readily formed, and their diameters correlate with substrate surface roughness. Forests of vertically aligned nanotubes can be prepared with the method.

专利号:US-4084936-A
优先权日:1975-08-16
标 题 :Reducing corrosion in reactors used for the synthesis of chromium dioxide
发明人：OHLINGER MANFRED; WAGNER GERHARD; HONECKER GERHARD; STRITZINGER HEINZ; SPAEHN HEINZ
权利人:BASF AG
摘要:In order to reduce corrosion of the inside walls of a reactor made of iron or an iron alloy and used for the synthesis of chromium dioxide by hydrothermal conversion of chromium(VI) oxide with chromium oxides of lower valency, lead or bismuth is added at those points of the reactor at which an aqueous phase occurs during conversion and which do not contact the chromium oxides to be converted. The lead or bismuth may be used in metallic form or in the form of their oxides, hydroxides or salts.

专利号:US-4107089-A
优先权日:1977-03-14
标 题 :Catalyst for the synthesis of methanol and method for preparing same
发明人：BONDAR PETR GRIGORIEVICH; GOROSHKO OLEG NIKOLAEVICH; SUSCHAYA LARISA EMMANUILOVNA; LAVROVA VALENTINA VASILIEVNA; LELEKA VALENTINA EMMANUILOVNA; ILKO EDUARD GRIGORIEVICH
权利人:BONDAR PETR GRIGORIEVICH; GOROSHKO OLEG NIKOLAEVICH; SUSCHAYA LARISA EMMANUILOVNA; LAVROVA VALENTINA VASILIEVNA; LELEKA VALENTINA EMMANUILOVNA; ILKO EDUARD GRIGORIEVICH
摘要:A catalyst for the synthesis of methanol which contains an oxide of one or more metals of Group VI, chromium subgroup, of the periodic system, copper oxide, zinc oxide and an oxide of one or more hardly reducible metals of Group II-III of the periodic system.

专利号:WO-2007012149-A1
优先权日:2005-07-29
标 题:A method of converting organic wastes into fuels
发明人：ANGELOV CHAVDAR
权利人:ANGELOV CHAVDAR
摘要:The method is applicable to the utilization of organic wastes through their gasification into synthesis gas with subsequent catalytic conversion of synthesis gas obtained into liquid synthetic motor fuels and (or) valuable chemical products. The method includes a stage of treatment of the wastes with gasifying agent containing oxygen, water vapor and (or) carbon dioxide, at which synthesis gas is obtained, which is subsequently compressed, subject to deep purification from mechanical impurities and compounds of sulphur, nitrogen and heavy metals. Then synthesis gas or synthesis gas mixed with liquid organic wastes is fed into a reactor for synthesis of hydrocarbons and converted into liquid motor fuels and components of basic oils with help of a polyfunctional catalyst.

专利号:WO-2020238470-A1
优先权日:2019-05-24
标题:Catalyst capable of effectively catalyzing conjugated linoleic acid synthesis, preparation method and method of catalyzing conjugated linoleic acid synthesis
发明人：XIAO TIANCUN; MA WANGJING
权利人:NANJING COJINA NEW MAT INSTITUTE CO LTD
摘要:A catalyst capable of effectively catalyzing conjugated linoleic acid synthesis, a preparation method, and a conjugated linoleic acid synthesis method. The catalyst is one or more of the solid heteropolyacid chemical compounds H 3 PW 12 O 40 ∙ xH 2 O, H 3 PMo 12 O 40 ∙ xH 2 O and H 4 SiW 12 O 40 ∙ xH 2 O, or is loaded on the carrier solid heteropolyacid chemical compounds H 3 PW 12 O 40 ∙ xH 2 O, H 3 PMo 12 O 40 ∙ xH 2 O and H 4 SiW 12 O 40 ∙ xH 2 O. When preparing the catalyst, mixing raw materials under magnetic stirring, undergoing secondary extraction, and heating and drying, forming by crystallization a solid heteropolyacid chemical compound. The solid heteropolyacid chemical compound has a topology which is a roughly sheet-shaped structure, having inclusions of hollow-structured particles, a specific surface area thereof being large, and capable of effectively catalyzing a reaction. The method for effectively catalyzing synthesis of conjugated linoleic acid is environmentally friendly, has simple separation, and greatly reduces 'three wastes' discharge; the catalyst of the present method may be recovered and reused.