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.
METHOD FOR PRODUCING TRIMETHYLADAMANTYLAMMONIUM HYDROXIDE
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Paragraph 0028; 0030; 0054, (2017/02/09)
PROBLEM TO BE SOLVED: To solve a problem in the conventional method for synthesizing trimethyladamantylammonium hydroxide that an equipment cost and a production cost become high. SOLUTION: The problem can be solved by a production method comprising: reacting N,N-dimethyladamantylamine with a quarternarizing agent in a nonpolar solvent having a solubility parameter of less than 10 to obtain N,N,N-trimethyladamantylammonium salt; and, at that time, adding a protic polar solvent to the reaction system before the reaction is started, while the reaction is proceeding, or after the reaction is complete, to selectively obtain N,N,N-trimethyladamantylammonium hydroxide from the reaction system. SELECTED DRAWING: Figure 1 COPYRIGHT: (C)2016,JPOandINPIT