CAS: 17927-65-0; Aluminum(Iii) Sulfate Xhydrate

相似化合物

7784-24-9 7784-26-1 95838-16-7

专利信息

专利号:US-5096684-A
优先权日:1989-03-31
标题 :Process for the synthesis of precursors of molecular sieves of the silicoaluminophosphate type, precursors obtained and their application to obtaining the said molecular sieves
发明人：GUTH FRANCOISE; KESSLER HENRI; DES COURIERES THIERRY
权利人:ELF FRANCE
摘要:Process for the synthesis of precursors of molecular sieves of the silicoaluminophosphate type by heating to >/=100 DEG C. under autogenous pressure a reaction mixture containing sources of silicon, aluminum and phosphorus in the presence of an organic structuring agent and of hydrofluoric acid. The precursor obtained can be converted into molecular sieve by calcination. Molecular sieves of the silicoaluminophosphate type can be used as adsorbants and catalysts for the conversion of hydrocarbons.

专利号:US-9714174-B2
优先权日:2012-07-19
标题:Methods of controlling polymorphism in organic-free synthesis of Na-zeolites and zeolite crystals formed therefrom
发明人：RIMER JEFFREY D; MALDONADO MIGUEL; OLEKSIAK MATTHEW D
权利人:RIMER JEFFREY D; MALDONADO MIGUEL; OLEKSIAK MATTHEW D; UNIV HOUSTON SYSTEM
摘要:Methods of controlling crystal polymorphism in organic-free synthesis of Na-Zeolites and the zeolite crystals formed using those methods are provided. The methods disclosed herein create certain types of zeolite crystals more efficiently than other previously known methods. The methods also create certain types of zeolite crystals in a form and concentration not previously disclosed. The methods disclosed herein generally comprise using solutions with varying ratios of silicon (Si), aluminum (Al), hydroxide (OH), and water. Some implementations of the invention disclosed include efficient methods of producing nearly pure cancrinite (CAN), methods of obtaining sodalite in solutions with a high Si/Al ratio, and a method of forming thin, platelet-like ANA crystals with a width of less than about 1 μm and a length of at least about 3 μm.

专利号:US-4627968-A
优先权日:1984-09-10
标 题 :Synthesis of crystalline aluminosilicate with alkylurea or alkylthiourea
发明人：KAI TADASHI
权利人:ASAHI CHEMICAL IND
摘要:In the synthesis of a crystalline aluminosilicate by heating an aqueous mixture containing a silica source, an alumina source and an alkali metal source, at least one compound selected from lower alkylureas and lower alkylthioureas is permitted to co-exist with the mixture.

专利号:US-5695735-A
优先权日:1994-11-30
标题:Process for the synthesis of zeolites and mesoporous solids from a homogeneous solution in a semi-open system
发明人：BENAZZI ERIC; LEGOFF PIERRE-YVES; CAULLET PHILIPPE; GUTH JEAN-LOUIS
权利人:INST FRANCAIS DU PETROLE
摘要:The invention concerns a process for the synthesis of zeolites based on element(s) T and mesoporous solids based on element(s) T, T being silicon and/or aluminium, comprising the following sequence of steps: i) synthesizing a reaction medium which is a homogeneous source of element(s) T containing: a) at least one source of element(s) T selected from the group formed by aqueous basic solutions of silica or silica and alumina and alcoholic solutions of alkyl tetraorthosilicate and trialkoxyaluminium; b) optionally, at least one structuring agent; c) optionally, seeds of the desired crystalline phase; ii) heating the reaction medium to a temperature in the range 20 DEG C. to 220 DEG C. for a period in the range several minutes and several days; iii) injecting at least one chemical agent at a controlled rate to generate polycondensable species in said medium.

专利号:US-5958366-A
优先权日:1996-10-17
标 题 :Synthesis of large crystal zeolites
发明人：SMITH ROBERT SCOTT; VERDUIJN JOHANNES PETRUS; COLLE THOMAS H; MOHR GARY DAVID; BURGFELS GOTZ; SCHONLINNER JOSEF
权利人:EXXON CHEMICAL PATENTS INC
摘要:Large crystal zeolites are prepared by heating a zeolite synthesis mixture under agitation to a temperature equal to or less than the effective nucleation temperature of the zeolite synthesis mixture and thereafter the zeolite synthesis mixture is heated without agitation to a temperature equal to or greater than the effective nucleation temperature of the zeolite synthesis mixture.

专利号:US-2023399234-A1
优先权日:2022-06-14
标题 :Synthesis of nano-sized zeolites
发明人：RIMER JEFFREY D; PARMAR DEEPENDRA; MALLETTE ADAM
权利人:UNIV HOUSTON SYSTEM
摘要:Nano-sized zeolites may be prepared using germanium oxide (GeO 2 ) as a component of the overall synthesis composition. This is accomplished by the addition of GeO 2 as an inexpensive reagent for the synthesis gel. Most of the Ge is retained in the synthesis mixture and the small amount incorporated in the zeolite solid (Si/Ge>100) does not have an appreciable impact on zeolite acidity or other physicochemical properties. The methods disclosed herein circumvent challenges to prepare nano-sized zeolites having dimensions less than 100 nm.