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Featured researches published by Hakuai Inoue.


Journal of Membrane Science | 1991

SURFACE DIFFUSION OF ORGANIC VAPOR MIXTURES THROUGH POROUS GLASS

Akihiro Yamasaki; Hakuai Inoue

Abstract This study reports the experimental results of surface diffusion on porous glass for four vapor mixtures, i.e. benzene/hexane, benzene/cyclohexane, benzene/acetone and benzene/methanol, at 308 K. For all components, the surface diffusion flux was changed by the presence of the accompanying component. This suggests that interaction among permeants plays a significant role in the surface diffusion of the mixtures. To discuss the interaction quantitatively, the adsorption equilibrium and surface diffusion coefficients, which determine surface diffusion rates, were obtained experimentally. For the adsorption equilibrium, an extended BET equation was derived by introducing interaction terms among different components; the equation expressed the experimental results of the adsorption equilibrium well. For the surface diffusion coefficients, the hopping model was extended to a binary system by considering the changes in the potential barrier of hopping due to the interaction between a diffusing molecule and an adsorbed molecule; the extended model explained the dependence of the surface diffusion coefficients on the amounts adsorbed up to monolayer capacities. These results show that interaction among components affects both the adsorption equilibrium and the surface diffusion coefficients. Furthermore, correlations were found between the interaction term in the expression of surface diffusion coefficients and the corresponding interaction term in the expressions of the adsorption equilibrium.


Chemical Communications | 2004

Imidazolidinium-based robust crypt with unique selectivity for fluoride anion

Bing-guang Zhang; Ping Cai; Chun-Ying Duan; Ren Miao; Longgen Zhu; Takashi Niitsu; Hakuai Inoue

A new imidazolidinium based receptor exhibiting unique affinity and high selectivity for fluoride anion through steric requirements and the cooperativity of multiple intramolecular binding, has been designed, synthesized and structurally characterized.


Journal of Chemical Engineering of Japan | 1999

Polymerization of Formaldehyde by an Immobilized Thiamine Catalyst on Cation-Exchange Resin

Hideo Tajima; Takashi Niitsu; Hakuai Inoue


Journal of Chemical Engineering of Japan | 2000

Repeated Use of Thiazolium Catalyst Immobilized on Cation-Exchange Resin

Hideo Tajima; Takashi Niitsu; Hakuai Inoue


Journal of Chemical Engineering of Japan | 2002

The Formose Reaction on a Synthetic Zeolite Impregnated with Thiazolium Catalyst

Hideo Tajima; Kei Tabata; Takashi Niitsu; Hakuai Inoue


Journal of Chemical Engineering of Japan | 2001

Effects of Thiazolium Counter Anion and Reaction Media on the Activity of Immobilized Thiazolium Catalyst

Hideo Tajima; Takashi Niitsu; Hakuai Inoue; Masato M. Ito


Journal of Chemical Engineering of Japan | 1992

Analysis of the formose reaction system

Takashi Niitsu; Masato M. Ito; Hakuai Inoue


Journal of Computer Chemistry, Japan | 2003

A Computational Study on the Mechanism of the Formose Reaction Catalyzed by the Thiazolium Salt

Hideo Tajima; Hakuai Inoue; Masato M. Ito


Symposium on Chemical Information and Computer Sciences Symposium on Structure-Activity Relationships 24th Symposium on Chemical Information and Computer Sciences | 2001

A Molecular Mechanics Study on the Intermolecular Association Complex of a Cyclic Hexapeptide with an Alkylamine

Masahide Tominaga; Masayoshi Yamaki; Masato M. Ito; Hakuai Inoue


Journal of Chemical Engineering of Japan | 2000

Effect of Unsteady Diffusion on Reaction Rate of Immobilized Catalytic Reaction in Batch System

Hideo Tajima; Takashi Niitsu; Hakuai Inoue

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Takashi Niitsu

Soka University of America

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Hideo Tajima

Soka University of America

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Masato M. Ito

Soka University of America

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Kei Tabata

Soka University of America

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Masayoshi Yamaki

Soka University of America

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Hideo Tajima

Soka University of America

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