CAS: 1310-73-2; Sodium Hydroxide

上下游产品

silica gel sodium sulfate formate watersodium acetate sodium bromide nickel(II) oxide nickel

Sodium;Oxygen(1-),水 以 Gaseous Matrix 用作溶剂,化学反应生成氢氧化钠
参考文献:Gas Phase Kinetics Of The Reactions Of Nao With H2,D2,H2O,And D2O
标题:Gas Phase Kinetics Of The Reactions Of Nao With H2,D2,H2O,And D2O
摘要:The Gas Phase Reactions Of The Nao Radical With H2,D2,H2O,And D2O Were Studied In A Flow Tube Reactor At Room Temperature. The Reaction Of Nao With H2 Has Two Exothermic Product Channels,Naoh+h And Na+h2O. Both Channels Were Observed And The Na Formation Channel Produces Some Na In The 32P State. The Rate Constants For The Abstraction Channel For H2 And D2 Reactants Are (2.6+/-1.0)x10−11 And (1.1x0.4)x10−11 Cm3 Molecule−1 S−1 At 296+/-2 K. The Reaction Of Nao With H2O Was Shown To Be Second Order And The Products Are Assumed To Be Naoh And Oh. The Rate Constants For H2O And D2O Reactants Are (2.2+/-0.4)x10−10 And (1.2+/-0.2)x10−10 Cm3 Molecule−1 S−1 At 298+/-1 K. The Measured Nao+h2O Rate Constant Is Compared To The Predicted Collision Rate Constant From A Model Based On The Large Attractive Dipole-dipole Force Between Nao And H2O. The Role Of These Reactions In Mesospheric Na Chemistry Is Briefly Discussed.
Doi:10.1063/1.453726

专利信息

专利号:US-6683189-B1
优先权日:1996-02-26
标 题 :Method for the synthesis of pyrrole and imidazole carboxamides on a solid support
发明人：DERVAN PETER B; BAIRD ELDON
权利人:CALIFORNIA INST OF TECHN
摘要:The present invention describes a novel method for the solid phase synthesis of polyamides containing imidazole and pyrrole carboxamides. The polyamides are prepared on a solid support from aromatic carboxylic acids and aromatic amines with high stepwise coupling yields (>99%), providing milligram quantities of highly pure polyamides. The present invention also describes the synthesis of analogs of the natural products Netropsin and Distamycin A, two antiviral antibiotics. The present invention also describes a novel method for the solid phase synthesis of imidazole and pyrrole carboxamide polyamide-oligonucleotide conjugates. This methodology will greatly increase both the complexity and quantity of minor-groove binding polyamides and minor-groove binding polyamide-oligonucleotide conjugates which can be synthesized and tested.

专利号:US-10010875-B2
优先权日:2014-10-30
标题 :Method for preparing copper-zinc-based catalyst used in synthesis of methanol through CO2 hydrogenation
发明人：YU YANG; HAO AIXIANG; CHEN HAIBO; WEI SHIXIN; YIN YUSHENG; XIE TIANMING; HE JIAN; MAO CHUNPENG; TAN JIEDONG
权利人:CHINA PETROLEUM & CHEM CORP; RES INSTITUTE OF NANJING CHEMICAL INDUSTRY GR; RES INST NANJING CHEMICAL IND GROUP
摘要:Disclosed is a method for preparing a copper-zinc-based catalyst used in synthesis of methanol through CO 2 hydrogenation, and ultrasonic waves are used for control over crystalline phase's composition of a catalyst precursor. Further related to is a catalyst prepared by such a method. An amount of aurichalcite in an active catalyst precursor can be improved through the method, and the specific surface area of the metal copper in a reduced state catalyst is high. The catalyst presents high activity and hydrothermal stability, and promotes high space time yield of methanol in the synthesis of methanol through CO 2 hydrogenation.

专利号:WO-2024189634-A1
优先权日:2023-03-13
标 题 :Highly atom economical process for synthesis of novel co-initiator for photo-induced radical polymerisation
发明人：KAPAT DR AJOY; AHMAD ASRAR; MITTAL GARVISHA
权利人:SHIV NADAR INSTITUTION OF EMINENCE DEEMED TO BE UNIV
摘要:The present invention relates to a base catalyzed sequential conjugate addition reaction for the synthesis of a novel and efficient co-initiator for Photo Induced Radical Polymerization. The process comprises synthesis of new co-initiator having 6,5 and 6,6-bicyclic scaffolds as central core. The process comprises reacting thiocarboxylic acid, catechol, thiocatechol, benzodithiol, benzothiocatechol and binol with ketone substrates at room temperature with a base and a solvent to yield the novel co-initiator compound of Formula 3, Formula 5, Formula C and Formula Z.

专利号:WO-2021014395-A1
优先权日:2019-07-24
标题:Process for the synthesis of deuterated capsaicin, capsaicinoids and synthetic capsaicin analogs
发明人：ORUGANTI SRINIVAS; AMRUTAPU SRAVANTH KUMAR; SAMPATH MAGESH; SEN SAIKAT
权利人:DR REDDY’S INST OF LIFE SCIENCES
摘要:The present application provides novel processes for the synthesis of deuterated intermediates of capsaicinoids, particularly II, III, IV and V of capsaicinoids, relating to pharmaceutical applications. The invention also provides novel intermediates of compounds of formula IX, XIV, XV, XVI, XVII, XVIII, XX and XXI utilized in the process of making deuterated capsaicin II, III, IV and V.

专利号:WO-2020253243-A1
优先权日:2019-06-20
标题:Process method for catalyzed synthesis of lactide with alkali metal compound
发明人：JIANG WEI; ZHANG YANKAI; SUN PING; LI AIMIN; CHEN JINLONG; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The present invention provides a process method for catalyzed synthesis of lactide with an alkali metal compound, comprising: mixing an alkali metal compound with a lactic acid oligomer, and carrying out a cracking reaction to obtain lactide by means of vacuum distillation, wherein the alkali metal compound used is one or a plurality of an alkali metal carbonate, an alkali metal bicarbonate, and an alkali metal hydroxide. Compared with the prior art, the advantages of the present invention is that the alkali metal compound reacts and dissolves quickly after being added to the system avoiding the problem of pipeline blocking due to a catalyst not dissolving, the alkali metal compound used is cheap and readily available, the amount of the catalyst used is small, the yield of the reaction product lactide is greater than 80%, and the reaction is rapid and easy to industrialize.

专利号:WO-2020253244-A1
优先权日:2019-06-20
标 题 :Process for catalytic synthesis of lactide
发明人：JIANG WEI; ZHANG YANKAI; SUN PING; LI AIMIN; ZHANG QUANXING
权利人:NANJING UNIVERSITY OF TECHNOLOGY; NANJING QUANKAI RES INSTITUTE OF BIOMATERIALS CO LTD
摘要:The present invention provides a process for the catalytic synthesis of lactide, comprising: mixing a lactic acid oligomer with a composite catalyst; and synthesizing lactide under a heating condition, and collecting the product using a vacuum distillation mode. The used composite catalyst is composed of a zinc or tin compound and an alkali metal compound. Compared with the prior art, the advantages of the present invention are that: the used composite catalyst features a high production rate with a small use amount, a low reaction temperature (150-220°C), and a short reaction time (2-5 h), has a single pass yield that may reach 95% or more, reduces energy consumption compared with the prior art, and facilitates industrial implementations.