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      저자 : ( Kh. M. Shakhidoyatov ) (검색결과 4 건)
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      • Process Optimization of Biphenile Chloromethylation

        ( V. V. Pak ),( R. K. Karimov ),( Kh. M. Shakhidoyatov ),( D. W. Soh ) 한국동굴학회 2006 동굴 Vol.73 No.-

        Optimization of the biphenile chloromethylation process with paraphormaldegide has been done in the presence of ZnCl2 with HCI gas by the Box-Wilson method of mathematical planning of experiment. The 4,4`-(dichloromethyl)-biphenile yield dependence on the biphenile-paraphormaldegide ratio, temperature and reaction duration has been studied. A mathematical model of the process has been developed and optimal conditions for the biphenile chloromethylation procedure has been determined.

      • Mathematical Planning for Revealing Optimal Synthetic Conditions of Naphthalene Choromethylation

        ( V. V. Pak ),( R. K. Karimov ),( Kh. M. Shakhidoyatov ),( L. M. Yun ),( D. W. Soh ) 한국동굴학회 2006 동굴 Vol.71 No.-

        Chloromethylnaphthalene is a valuable compound for obtaining of the plant growing stimulato-napthylacetic acid. Chloromethylation of naphthalene by paraformaldehyde in the presence of glacial acetic acid, phosphoric and hydrochloric acids at temperature 80-85C and duration -6 hours the-chloromenthylnapnaphtalene yield was 55-57%. Using Box- Wilson method for mathematical planning of experiment carried out optimization of its synthesis for purpose increasing- chloromethylnaphthalene yield. Preliminary, one - factor experiments were carried out for selecting for selecting independence main parameters influencing on the synthesis. A full factor experiment of 23 with extended matrix of planning was used for optimization. Aiming to increase the-chloromethylnaphthalene yield, the obtained mathematical model was used for program of sharp raising on the reply surface. The received optimal conditions for the- chloromethylnaphthalene synthesis were selected as following: molar ratio of naphthalene-parapfsormaldehyde of 1 : 2 temperature-105C duration of the reaction - 3 hours. The yield of - chloromethylnaphthalene under these optimal conditions was 75%.

      • Mathematical Planning for Revealing Optimal Synthetic Conditions of Naphthalene Chloromethylation

        Pak, V.V.,Karimov, R.K.,Shakhidoyatov, Kh.M.,Yun, L.M.,Soh, D.W. The Speleological Society 2006 동굴 Vol.71 No.-

        Chloromethylnaphthalene is a valuable compound for obtaining of the plant growing stimulator - -napthylacetic acid. Chloromethylation of naphthalene by paraformaldehyde in the presence of glacial acetic acid, phosphoric and hydrochloric acids at temperature 80 - 85C and duration - 6 hours the -chloromethylnaphthalene yield was 55-57%. Using Box-Wilson method for mathematical planning of experiment carried out optimization of its synthesis for purpose increasing -chloromethylnaphthalene yield. Preliminary, one - factor experiments were carried out for selecting independence main parameters influencing on the synthesis. A full factor experiment of 23 with extended matrix of planning was used for optimization. Aiming to increase the -chloromethylnaphthalene yield, the obtained mathematical model was used for program of sharp raising on the reply surface. The received optimal conditions for the -chloromethylnaphthalene synthesis were selected as following: molar ratio of naphthalene parapfsormaldehyde of 1 : 2 temperature - 105C duration of the reaction - 3 hours. The yield of -chloromethylnaphthalene under these optimal conditions was 75%.

      • Process Optimization of Biphenile Chloromethylation

        Pak, V.V.,Karimov, R.K.,Shakhidoyatov, Kh.M.,Soh, D.W. The Speleological Society 2006 동굴 Vol.73 No.-

        Optimization of the biphenile chloromethylation process with paraphormaldegide has been done in the presence of $ZnCl_2$ with HCl gas by the Box-Wilson method of mathematical planning of experiment. The 4,4'-(dichloromethyl)-biphenile yield dependence on the piphenile -paraphormaldegide ratio, temperature and reaction duration has been studied. A mathematical model of the process has been developed and optimal conditions for the biphenile chloromethylation procedure has been determined.

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