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Featured researches published by Tamotsu Imai.


Applied Catalysis A-general | 2001

Production of linear alkylbenzenes

Joseph A. Kocal; Bipin V. Vora; Tamotsu Imai

Linear alkylbenzene technology has almost completely replaced the older branched alkylbenzene technology for production of surfactants due to improved biodegradability and cost-effectiveness. The technology of choice today is dehydrogenation of n-paraffins to n-olefins followed by benzene alkylation to produce linear alkylbenzene. Solid acids catalyst-based systems are emerging to slowly replace hydrofluoric acid units in order to ensure environmental safety and improve economics. Numerous materials have been evaluated as solid acid catalysts for this alkylation process including zeolites, clays, various metal oxides, and supported aluminum chloride. At this time, only the UOP Detal technology has been commercialized. Because of ongoing fundamental studies on reaction mechanism and catalyst properties, significant progress is being made to improve the selectivity, catalytic stability, and long-term stability of these solid acids under commercial operating conditions.


Archive | 1999

Process for the desulfurization of a hydrocarbonaceous oil

Carlos A. Cabrera; Tamotsu Imai


Archive | 1992

Alkane rejection in C4 etherification and isomerization process

Bipin V. Vora; Tamotsu Imai; Peter J. Pujado


Archive | 1998

1,3-Butadiene separation from a crude C4 stream using catalytic extractive distillation

Tamotsu Imai


Archive | 1998

Process for reforming NAPHTHA feedstock using selective multimetallic-multigradient reforming catalyst

Paula L. Bogdan; Tamotsu Imai


Chemistry & Industry | 1990

Production of detergent olefins and linear alkylbenzenes

Bipin Vora; Peter R. Pujado; Tamotsu Imai; T. Fritsch


Archive | 1994

Process for the dehydrogenation of paraffinic hydrocarbons

Bipin V. Vora; Tamotsu Imai


Archive | 1995

Balanced alkylation feed from etherification and isomerization

Bipin V. Vora; Tamotsu Imai; Peter R. Pujado


Archive | 1992

Process for producing aromatic compounds from C2-C6 aliphatic hydrocarbons using a hydrogen tolerant catalyst

Joseph A. Kocal; Tamotsu Imai; Paul J. Kuchar; Christopher D. Gosling


Archive | 1991

Process for reactivating a deactivated dehydrocyclodimerization catalyst

Joseph A. Kocal; Christopher D. Gosling; Paul J. Kuchar; Tamotsu Imai

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