专利号:WO-2025004111-A1 优先权日:2023-06-30 标 题 :Apparatus and continuous process for synthesis of lsx zeolite using cation exchange 发明人:MALI NILESH ATMARAM; NANDANWAR SACHIN UTTAMRAO; RAVINDRANATHAN SAPNA; NIPHADKAR PRASHANT SURESH; BOKADE VIJAY VASANT; LELE ASHISH KISHORE 权利人:COUNCIL SCIENT IND RES 摘要:The present invention relates to a continuous process for the synthesis of Low Silica X (LSX) zeolite using cation exchange method. Further, the present invention relates to an apparatus (100) for production of LSX zeolites by cation exchange method. Specifically, the present invention relates to an improved continuous process for production of Li- LSX zeolites based on cation exchange method by using a continuous process reactor system. Further, the present invention provides a process with shorter time period, easily recoverable and reusable salt-solution and good adsorption capacity of the synthesized Li- LSX zeolites.
专利号:US-2008112874-A1 优先权日:2006-08-31 标 题:Method for producing calcium phosphate powders using an auto-ignition combustion synthesis reaction 发明人:BURKES DOUGLAS E; MOORE JOHN J; AYERS REED A 权利人:BURKES DOUGLAS E; MOORE JOHN J; AYERS REED A 摘要:A method for making high purity, multiphasic calcium phosphate powders using an Auto-Ignition Combustion Synthesis (AICS) reaction of a calcium salt, a phosphate salt and a fuel is provided. In the method provided, energy released from the AICS reaction between the calcium salt, phosphate salt and fuel ignites at temperatures much lower than the actual phase transformation temperatures and reaches a high temperature rapidly enough for synthesis of the desired product to occur, without the requirement for coprecipitation, an external heat source for calcination and/or additional steps for removing undesired precursors from the desired final product.
专利号:US-4246412-A 优先权日:1979-08-27 标 题:Synthesis of 2-keto-1,4-diazacycloalkanes with a soft ion catalyst 发明人:LAI JOHN T 权利人:GOODRICH CO B F 摘要:A phase transfer catalyzed 'soft ion synthesis' is disclosed in which the presence of a 'soft ion' generated in situ by a soft ion catalyst has a directive effect which favors the formation of a polysubstituted 2-keto-1,4-diazacycloalkane isomer having substituents on both N4-adjacent carbon atoms ('C atoms') of its diaza ring; this isomer is formed at the expense of isomers in which an N4-adjacent C atom is not substituted. Such an isomer which has substituents on each N4-adjacent C atom is generally more effective as a u-v light stabilizer than an isomer which has an unsubstituted N4-adjacent C atom, and therefore the former is more desirable. A liquid phase reaction of an acyclic 1,2-diamine with a monoketone or monoaldehyde in the presence of a phase transfer catalyst, a haloform and alkali is disclosed, in which reaction a soft ion catalyst which generates a soft ion selected from the group consisting of cyanide, iodide and thiocyanate, has a directive effect on the reaction so as to produce more isomer with substituents on each N4-adjacent C atom than would be formed, under identical conditions but without the presence of the soft ion. The directive effect of the soft ion appears to enhance any directive effect that a particular phase transfer catalyst may exhibit.
专利号:US-6087512-A 优先权日:1996-09-18 标题:Process for preparation of glycidyl ether 发明人:FURUKAWA YOSHIRO; KITAORI KAZUHIRO; YANAGIMOTO TETSUYA; MIKAMI MASAFUMI; YOSHIMOTO HIROSHI; OTERA JUNZO 权利人:DAISO CO LTD 摘要:A process for preparation of a glycidyl ether which is characrelized in reacting an epoxy compound of the formula ##STR1## wherein X is halogen or sulfonyloxy in the presence of a fluoride salt, with an alcohol. According to the above method, glycigyl ethers or their optically active compounds important as intermediates for synthesis of medicines are easily obtained in good yield and especially the optically active compounds are obtained with highly optical purity.
专利号:US-6057476-A 优先权日:1996-09-18 标题:Process for the preparation of 3-amino-2-hydroxy-1-propyl ethers 发明人:FURUKAWA YOSHIRO; KITAORI KAZUHIRO; MIKAMI MASAFUMI; YOSHIMOTO HIROSHI; OTERA JUNZO 权利人:DAISO CO LTD 摘要:A process for preparation of 3-amino-2-hydroxy-1-propyl ether of the formula ##STR1## wherein R 1 is substituted or unsubstituted alkyl, substituted or unsubstituted aryl, or substituted or unsubstituted heterocyclic ring, R 2 and R 3 are the same or different hydrogen atom, a substituted or unsubstituted alkyl, or may form a ring together with an adjacent nitrogen atom, which ring may be interrupted with nitrogen atom, oxygen atom or sulfur atom, n which is characterized in reacting an epoxy compound of the formula ##STR2## wherein X is halogen, in the presence of a fluoride salt, with an alcohol and then reacting an amine. n According to the above method, an intermediates for synthesis of medicines is obtained in good yield and highly optical purity.
专利号:US-2005250731-A1 优先权日:2004-05-07 标题:Synthesis of purified, moderately esterified polyol polyester fatty acid compositions 发明人:SCHAEFER JARED J 权利人:PROCTER & GAMBLE 摘要:Processes for the preparation of a purified moderately esterified polyol fatty acid polyester composition including the steps of: forming an initial reaction mixture containing a polyol portion, a highly esterified polyol fatty acid polyester, a moderately esterified polyol fatty acid polyester; and a catalyst; wherein the molar ratio of the polyol portion, highly esterified polyol polyester portion, and moderately esterified polyol polyester portion should be chosen such that the final ratio of total fatty acid esters to total polyol backbones is in the range from about 3.2:1 to about 6.4:1; wherein the molar ratio of said catalyst to said highly esterified polyol polyester is in the range of from about 0.01:1 to about 10:1; and then forming an initial reaction product by reacting the initial reaction mixture in an inert atmosphere, in the presence of a sufficient amount of agitation, for a period of time in the range of from about 30 minutes to about 6 hours, and at a temperature in the range of from about 80° C. to about 140° C.
摘要:Marschner, C., Science of Synthesis Knowledge Updates, (2020) 3, 123. 摘要:Hatano, M., Science of Synthesis Knowledge Updates, (2013) 1, 152. 摘要:Uyanik, M.; Ishihara, K., Science of Synthesis: Catalytic Oxidation in Organic Synthesis, (2017) 1, 659.