53075-09-5Relevant articles and documents
Synthesis of New Microporous Zincosilicates with CHA Zeolite Topology as Efficient Platforms for Ion-Exchange of Divalent Cations
Koike, Natsume,Iyoki, Kenta,Keoh, Sye Hoe,Chaikittisilp, Watcharop,Okubo, Tatsuya
, p. 808 - 812 (2018)
There is growing interest to develop zeolite materials capable of stabilizing divalent cations such as Cu2+, Fe2+, and Ni2+ for catalytic applications. Herein the synthesis of a new microporous zincosilicate with CHA zeolite topology is reported for the first time, by particularly focusing on the mixing procedures of the raw materials to prevent the precipitation of zinc oxides/hydroxides and the formation of impurity phases. The obtained zincosilicate CHA products possess remarkably higher ion-exchange ability for catalytically useful, divalent cations, demonstrated here using Ni2+ as an example, compared to that of aluminosilicate and zincoaluminosilicate analogs. It is anticipated that these zincosilicate CHA materials can be an efficient platform for several important catalytic reactions. In addition, the present finding would provide a general guideline for effective substitution of other heteroatoms into the zeolite frameworks.
Preparation method of adamantyltrimethylammonium hydroxide
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, (2020/07/14)
The invention discloses an adamantyl trimethyl ammonium hydroxide preparation method, and belongs to the technical field of chemical synthesis. The method comprises: (1) carrying out a reaction for acertain time in an organic solvent by using 1-bromoadamantane as a starting raw material, using a dimethylamine salt as an amination reagent and using triethylamine as a dimethylamine release agent toobtain N,N-dimethyladamantadine; and (2) preparing adamantyl trimethyl ammonium hydroxide from the N,N-dimethyladamantane amine, wherein the N,N-dimethyladamantadine reacts with chloromethane to obtain adamantyl trimethyl ammonium chloride, and then the adamantyl trimethyl ammonium chloride is electrolyzed to obtain the adamantyl trimethyl ammonium hydroxide. The method of the invention has advantages of safety, environmental protection, high yield and the like.
Organic solvent-acid-water mixture of organic solvent recovery method
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Paragraph 0116, (2017/02/24)
PROBLEM TO BE SOLVED: To provide a method for recovering an organic solvent, utilizing an inorganic separation membrane. SOLUTION: An organic solvent-acid-water mixture is fed to a separation module housing an inorganic porous support-zeolite membrane composite having a zeolite membrane as a separation membrane on an inorganic porous support surface to thereby recover the condensed organic solvent, wherein the zeolite membrane containing a zeolite in which the molar ratio of SiO2/Al2O3of the zeolite is ≥5 is used. COPYRIGHT: (C)2012,JPO&INPIT