CAS: 1314-20-1; Thorium Dioxide

📜草酸钍 反应生成氧化钍
参考文献:Balakrishna,P.;Varma,B. P.;Krishnan,T. S.;Mohan,T. R. R.;Ramakrishnan+,J. Nucl. Mater.,160,(1988) N,C. 88-94
标题:Balakrishna,P.;Varma,B. P.;Krishnan,T. S.;Mohan,T. R. R.;Ramakrishnan+,J. Nucl. Mater.,160,(1988) N,C. 88-94

专利信息

专利号:WO-2004087313-A1
优先权日:2003-03-31
标题:Catalyst for synthesis of hydrocarbons from synthesis gas, process of preparation of catalyst
发明人：PANDULA SAMUEL; MAITY SUDIP; DASANDHI YOGESH CHANDRA; MUKHERJEE SOMNATH; MAITRA SANDIP KUMAR
权利人:COUNCIL SCIENT IND RES
摘要:The present invention relates to a catalyst useful in the synthesis of hydrocarbons from synthesis gas. The present invention also relates to a process for the preparation of a catalyst useful for the production of hydrocarbons from synthesis gas. The present invention particularly relates to preparation of a catalyst for production of wax from synthesis gas. The invention finds its usage in synthesising hydrocarbons, specifically wax, using Fisher-Tropsch Synthesis.

专利号:US-2024051918-A1
优先权日:2022-08-10
标 题 :Sequential and independent synthesis of mercaptans and asymmetrical sulfides in a single reactor
发明人：LASSEN KENNETH M; NWAGWU UGOCHUKWU; HASENBERG DANIEL M
权利人:CHEVRON PHILLIPS CHEMICAL CO LP
摘要:The present disclosure generally relates to processes to produce a mercaptan and an asymmetrical sulfide utilize stacked bed catalyst systems containing CoMo and NiMo, and these processes demonstrate a synergistic reduction in the amount of ethylene, methyl mercaptan, ethyl mercaptan, and H2S in product mixtures. In aspects, the conversion of limiting reactants in the synthesis of asymmetrical sulfides unexpectedly remain high under increased flow rates through the catalyst bed, and under reduced temperatures and pressures. In further aspects, reactor systems configured for the independent synthesis of mercaptans and asymmetrical sulfides in a single fixed bed catalyst vessel are also disclosed as a simplification of existing reactor systems employing separate reactors for separate mercaptan and sulfide syntheses.

专利号:US-7247287-B2
优先权日:2003-06-11
标 题 :Synthesis of aluminophosphates and silicoaluminophosphates
发明人：CAO GUANG; SHAH MATU J
权利人:EXXONMOBIL CHEM PATENTS INC
摘要:The invention is directed to a method of synthesising silicoaluminophosphate and aluminophosphate molecular sieves using synthesis templates that contain at least one template of general formula R 1 R 2 N—R 3 , wherein R 1 and R 2 are independently selected from the group consisting of alkyl groups having from 1 to 3 carbon atoms and hydroxyalkyl groups having from 1 to 3 carbon atoms; R 3 is selected from the group consisting of 4- to 8-membered cycloalkyl groups, optionally substituted by 1 to 3 alkyl groups having from 1 to 3 carbon atoms, and 4- to 8-membered heterocyclic groups having from 1 to 3 heteroatoms, said heterocyclic groups being optionally substituted by 1 to 3 alkyl groups having from 1 to 3 carbon atoms and the heteroatoms in said heterocyclic groups being selected from the group consisting of O, N, and S. In particular, the present invention relates to the synthesis of silicoaluminophosphate molecular sieves of the CHA framework type having a low silicon to aluminium atomic ratio.

专利号:US-6835363-B1
优先权日:2003-08-06
标题:Synthesis of molecular sieves of CHA framework type
发明人：STROHMAIER KARL G
权利人:EXXONMOBIL CHEM PATENTS INC
摘要:The invention is directed to a method of synthesizing aluminophosphate and silicoaluminophosphate molecular sieves and in particular to the synthesis of aluminophosphate and silicoaluminophosphate molecular sieves using the synthesis templates that contain two dimethylamino moieties in combination with hydrogen fluoride. The use of this template in combination with hydrogen fluoride results in good quality SAPO molecular sieves of CHA framework type with low levels of silicon that are produced in relatively short crystallization times.

专利号:US-6620983-B1
优先权日:2002-06-12
标 题 :Synthesis of aluminophosphates and silicoaluminophosphates
发明人：CAO GUANG; SHAH MATU J; STROHMAIER KARL G; HALL RICHARD B
权利人:EXXONMOBIL CHEM PATENTS INC
摘要:The invention is directed to a method of synthesizing aluminophosphate or silicoaluminophosphate molecular sieves and in particular to the synthesis of silicoaluminophosphate molecular sieves using synthesis templates in combination with a source of fluoride comprising at least two fluoride substituents. The use of such fluorine containing compounds results in good quality low silica SAPO molecular sieves of CHA framework type.

专利号:US-4769497-A
优先权日:1986-07-04
标题:Process for the synthesis of 2,2-dialkoxy-propanes
发明人：MESSINA GIUSEPPE; MORETTI MARIO D; SANNA GAVINO; SANNA SALVATORE R; SOMA GIOVANNI
权利人:ENICHEM ANIC SPA
摘要:A new method of synthesis of a 2,2-dialkoxy-propane e.g. 2,2-dimethoxy-propane, is described through reaction of a cyclic ketal, e.g. 2,2-dimethyl-(1,3)-dioxolane, with a boric acid alkyl ester, e.g. boric acid trimethyl ester, in the presence of an acidic catalyst. The reaction may be carried out either in liquid or in vapour phase. In the latter case, heating of the thus obtained intermediate mixture to the reflux temperature should follow the catalytic step.