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1. 发明授权

US10105685B2 Preparation method of particle size-controlled, chromium oxide particles or composite particles of iron oxide-chromium alloy and chromium oxide 有权
公开(公告)号：US10105685B2
公开(公告)日：2018-10-23
申请号：US15138966
申请日：2016-04-26
申请人： Korea Institute of Energy Research
发明人： Ji Chan Park , Jung Il Yang , Tak Hyoung Lim , Heon Jung , Shin Wook Kang
IPC分类号： C01G37/02 , B01J23/86 , B01J23/26 , B01J35/00 , B01J37/00 , C01G37/033 , C01B32/40
摘要： Provided are particle size-controlled, chromium oxide particles or composite particles of iron oxide-chromium alloy and chromium oxide; a preparation method thereof; and use thereof, in which the chromium oxide particles or the composite particles of iron oxide-chromium alloy and chromium oxide having a desired particle size are prepared in a simpler and more efficient manner by using porous carbon material particles having a large pore volume as a sacrificial template. When the chromium oxide particles or the composite particles of iron oxide-chromium alloy and chromium oxide thus obtained are applied to gas-phase and liquid-phase catalytic reactions, they are advantageous in terms of diffusion of reactants due to particle uniformity, high-temperature stability may be obtained, and excellent reaction results may be obtained under severe reaction environment.

2. 发明授权

US10046313B2 Mesoporous materials and processes for preparation thereof 有权
公开(公告)号：US10046313B2
公开(公告)日：2018-08-14
申请号：US14891228
申请日：2014-05-08
申请人： UNIVERSITY OF CONNECTICUT
发明人： Steven L. Suib , Altug Suleyman Poyraz , Lei Jin , Chung-hao Kuo
IPC分类号： B01J27/14 , C01G11/00 , B01J35/10 , B01J37/04 , B01J37/08 , C01B33/12 , C01F17/00 , C01G37/033 , C01G45/02 , B01J23/30 , B01J27/053 , H01B1/02 , B01J35/00 , B01J35/02 , C01B19/00 , B01J37/00 , B01J29/04 , B01J29/03 , B01J27/057 , B01J21/18 , B01J21/06 , B01J37/10 , C01G33/00 , C01G25/02 , C01G35/00 , C01G19/02 , C01G11/02 , C01G9/08 , C01G1/12 , C01G1/02 , C01G41/00 , C01G37/02 , B82Y30/00 , C01B31/00 , C01G27/02 , B01J23/10 , B01J23/14 , B01J23/20 , B01J23/24 , B01J23/34 , B01J27/04 , B01J29/40
摘要： A process for preparing a mesoporous material, e.g., transition metal oxide, sulfide, selenide or telluride, Lanthanide metal oxide, sulfide, selenide or telluride, a post-transition metal oxide, sulfide, selenide or telluride, and metalloid oxide, sulfide, selenide or telluride. The process comprises providing a micellar solution comprising a metal precursor, an interface modifier, a hydrotropic or lyotropic ion precursor, and a surfactant; and heating the micellar solution at a temperature and for a period of time sufficient to form the mesoporous material. A mesoporous material prepared by the above process. A method of controlling nano-sized wall crystallinity and mesoporosity in mesoporous materials. The method comprises providing a micellar solution comprising a metal precursor, an interface modifier, a hydrotropic or lyotropic ion precursor, and a surfactant; and heating the micellar solution at a temperature and for a period of time sufficient to control nano-sized wall crystallinity and mesoporosity in the mesoporous materials. Mesoporous materials and a method of tuning structural properties of mesoporous materials.

3. 发明授权

US09580333B2 Process for preparing chromium(III) oxide 有权
标题翻译：制备氧化铬（III）的方法
公开(公告)号：US09580333B2
公开(公告)日：2017-02-28
申请号：US13991516
申请日：2011-12-07
申请人： Holger Friedrich , Matthias Boll , Rainer Ortmann
发明人： Holger Friedrich , Matthias Boll , Rainer Ortmann
IPC分类号： C01G37/033 , C01G37/00 , C09C1/34
CPC分类号： C01G37/033 , C01G37/00 , C01P2006/80 , C09C1/346
摘要： Process for preparing chromium(III) oxide, which comprises the steps: a) reaction of sodium monochromate with gaseous ammonia, in particular at a temperature of from 200 to 800° C., b) hydrolysis of the reaction product obtained in step a) with the pH of the water for the hydrolysis being reduced before the hydrolysis or that of the alkaline mother liquor being reduced during or after the hydrolysis, to a value of from 4 to 11, preferably from 5 to 10, by means of an acid, c) isolation of the hydrolysis product which has precipitated in step b), preferably at a pH of from 4 to 11, in particular from 5 to 10, and optionally washing and optionally drying and d) calcination of the hydrolysis product obtained in step c) at a temperature of from 700 to 1400° C., in particular from 800 to 1300° C.
摘要翻译：制备氧化铬（III）的方法，其包括以下步骤：a）将单色钠与气态氨反应，特别是在200至800℃的温度下，b）水解步骤a）中获得的反应产物，在水解之前水解的水的pH降低，或在水解期间或之后碱性母液的pH降低至4至11，优选5至10的值，借助于酸， c）分离在步骤b）中沉淀的水解产物，优选在4至11，特别是5至10的pH下，并任选地洗涤和任选地干燥和d）煅烧步骤c中获得的水解产物），温度为700〜1400℃，特别是800〜1300℃。

4. 发明授权

US5122238A Efficient electrolytic method of making chromic acid from sodium bichromate 失效
标题翻译：从重铬酸钠制备铬酸的高效电解方法
公开(公告)号：US5122238A
公开(公告)日：1992-06-16
申请号：US712770
申请日：1991-06-10
申请人： Russell J. Morgan , Robert L. Zeller, III , Ursula I. Keller
发明人： Russell J. Morgan , Robert L. Zeller, III , Ursula I. Keller
IPC分类号： C01G37/033 , C25B1/22
CPC分类号： C25B1/22 , C01G37/033
摘要： Disclosed is a method of making chromic acid by electrolyzing an aqueous solution of sodium bichromate until the sodium bichromate is converted to chromic acid at a bichromate percent conversion of about 1 to about 48.4. Sulfuric Acid is then added to the aqueous solution in an amount between stoichiometric and about 30 wt % in excess of stoichiometric to convert the remaining sodium bichromate to chromic acid. This results in the precipitation of chromic acid, which is separated from the aqueous solution.
摘要翻译：公开了通过电解重铬酸钠水溶液制备铬酸的方法，直到重铬酸钠以重铬酸盐的转化率转化为约1至约48.4的铬酸为佳。然后将硫酸以化学计量和约30重量％的量超过化学计量的量加入到水溶液中，以将剩余的重铬酸钠转化为铬酸。这导致与水溶液分离的铬酸的沉淀。

5. 发明授权

US4687643A Apparatus for preparing monodispersed, spherical, non-agglomerated metal oxide particles having a size below one micron 失效
标题翻译：用于制备尺寸低于1微米的单分散，球形，非团聚的金属氧化物颗粒的装置
公开(公告)号：US4687643A
公开(公告)日：1987-08-18
申请号：US800692
申请日：1985-11-22
申请人： Paolo Cortesi , Gianni Donati , Giuseppe Saggese
发明人： Paolo Cortesi , Gianni Donati , Giuseppe Saggese
IPC分类号： C01G1/02 , B01F5/04 , B01J19/26 , C01B13/20 , C01B13/34 , C01F7/02 , C01F7/30 , C01G15/00 , C01G23/04 , C01G23/053 , C01G23/07 , C01G25/02 , C01G31/02 , C01G37/033 , C01G49/06 , C09C1/00 , C09C1/36 , B01F3/04 , B05B7/02 , C01G23/047
CPC分类号： C01G23/07 , B01F5/0413 , B01J19/26 , C01B13/20 , C01F7/304 , C01G25/02 , B01J2208/00371 , B01J2219/00123 , C01P2002/50 , C01P2004/32 , C01P2004/51 , C01P2004/62 , C01P2006/22 , Y10S261/75
摘要： Apparatus for preparing spherical, submicronic, monodispersed, and non-agglomerated particles of metal oxides by reacing with steam a gaseous stream containing an aerosol of liquid particles of a hydrolyzable metal compound. The apparatus is characterized in that into a duct, in which an inert gas stream containing vapors of a hydrolyzable metal compound flows, there is fed through a nozzle a cold inert gas stream, the temperatures and flows of the two gaseous streams being such as to establish in the duct a temperature lower than the condensation temperature of the metal compound; the mixed gaseous streams having a turbulent flow in the duct, with a Reynolds number equal to or higher than 1800. At the duct outlet, the aerosol of metal compound liquid particles, which has formed in the duct, is caused to react with steam, wherefore solid particles of hydrated metal oxide form, which are subsequently calcined to the oxide.

6. 发明授权

US4040860A Chromium oxide pigment from sodium chromate dihydrate plus ammonium salt 失效
标题翻译：铬酸钠二水合物加铵盐的氧化铬颜料
公开(公告)号：US4040860A
公开(公告)日：1977-08-09
申请号：US656040
申请日：1976-02-06
申请人： Manfred Mansmann , Wolfgang Rambold
发明人： Manfred Mansmann , Wolfgang Rambold
IPC分类号： C01G37/033 , C01G37/02 , C09C1/34
CPC分类号： C01G37/02 , C01P2006/60
摘要： In the production of chromium oxide green pigment by heating a substantially stoichiometrically equivalent mixture of sodium dichromate dihydrate and an ammonium salt selected from the group consisting of the sulfate and chloride, the improvement which comprises dry mixing sodium dichromate dihydrate having a particle size less than 2 mm with the ammonium salt having a particle size less than about 0.5 mm, heating the resulting mixture over a period of about 15 minutes to a pigment-forming temperature of about 800.degree. to 1100.degree. C, calcining the mixture at a temperature in that range, and separating the formed pigment from the salts. To the mixture prior to heating there may be added sodium hydroxide solution, boron compounds such as borax and/or organic modifiers such as sawdust which improve the color and tinting strength of the resulting pigment. The pigments are brighter, and of higher tinting strength than heretofore produced.
摘要翻译：在通过加热基本上化学计量当量的重铬酸钠二水合物和选自硫酸盐和氯化物的铵盐的混合物来生产氧化铬绿色颜料的改进包括干混合粒度小于2的重铬酸钠二水合物毫米，其中铵盐的粒度小于约0.5毫米，将所得混合物在约15分钟的时间内加热至约800至1100℃的颜料形成温度，在该范围内的温度下煅烧该混合物，并将形成的颜料与盐分离。在加热之前，可以向混合物中加入氢氧化钠溶液，硼化合物等硼化合物和/或诸如锯末的有机改性剂，改善所得颜料的着色和着色强度。颜料比以前生产的颜色更亮，颜色更强。

7. 发明授权

US2993756A Method for preparing chromic acid 失效
标题翻译：铬酸的制备方法
公开(公告)号：US2993756A
公开(公告)日：1961-07-25
申请号：US82321259
申请日：1959-06-26
申请人： DIAMOND ALKALI CO
发明人： MARLATT RALPH E , PERRIN TOM S , BANNER ROBERT G
IPC分类号： C01G37/033
CPC分类号： C01G37/033

8. 发明授权

US2169368A Oxidizing agent and method of making 失效
标题翻译：氧化剂及其制造方法
公开(公告)号：US2169368A
公开(公告)日：1939-08-15
申请号：US8489836
申请日：1936-06-12
申请人： MURRAY WALLACE J , STEVENSON EARL P
发明人： MURRAY WALLACE J , STEVENSON EARL P
IPC分类号： C01G37/033 , C07F11/00
CPC分类号： C07F11/005 , C01G37/033

9. 发明授权

US1535100A Process of producing chromic-acid solutions 失效
标题翻译：生产铬酸溶液的方法
公开(公告)号：US1535100A
公开(公告)日：1925-04-28
申请号：US53128122
申请日：1922-01-23
申请人： BURWELL ARTHUR W
发明人： BURWELL ARTHUR W
IPC分类号： C01G37/033
CPC分类号： C01G37/033

10. 发明授权

US1491944A Process of producing chromic-acid solutions 失效
标题翻译：生产铬酸溶液的方法
公开(公告)号：US1491944A
公开(公告)日：1924-04-29
申请号：US53128222
申请日：1922-01-23
申请人： BURWELL ARTHUR W
发明人： BURWELL ARTHUR W
IPC分类号： C01G37/033
CPC分类号： C01G37/033

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