Chiyoda Corporation

Nissan Motor Company Limited

Research Association for Utilization of Light Oil

Research Association for the Utilization of Light Oil

Hiroaki Nishijima

Sachio Asaoka

Nobuo Moriya

Nobuhiro Onda

Kouji Sakashita

Tetsuo Maejima

Makoto Yasui

Tsuneo Watanabe

Nobusuke Toukura

Masayuki Yasuoka

Noriyuki Yoneda

Akio Shindo

Ryuichi Inaba

Takashi Imazeki

Kaoru Shimogawara

Athumi Kukidome

Kazuo Hirabayashi

Keiji Shimoda

Tadami Kondoh

Takeshi Kouzaki

Kazushige Kawamura

Shinichi Inoue

Dai Takeda

Toshiji Makabe

Yoshimi Okada

Yoichi Umehara

Osamu Togari

Masashi Saito

Isao Suzuki

Kouji Adachi

Takao Kameda

Fumiho Igarashi

Toshio Wakai

Naonori Sonehara

Athumi Kukudome

Karou Shimogawara

Yoshimi c/o Chiyoda Corporation Okada

Toshiji c/o Chiyoda Corporation Makabe

Masashi c/o Chiyoda Corporation Saito

Provided are: a uniformly, highly dispersed metal catalyst including a catalyst carrier and a catalyst metal being loaded thereon dispersed throughout the carrier, the uniformly, highly dispersed metal catalyst having excellent performances with respect to catalytic activity, selectivity, life, etc.; and a method of producing the same. The uniformly, highly dispersed metal catalyst includes a catalyst carrier made of a metal oxide and a catalyst metal having catalytic activity, the catalyst metal being loaded on the catalyst carrier, in which the catalyst carrier is a sulfur-containing catalyst carrier having sulfur or a sulfur compound almost evenly distributed throughout the carrier and the catalyst metal is loaded on the sulfur-containing catalyst carrier in a substantially evenly dispersed manner over the entire carrier substantially according to the distribution of the sulfur or the sulfur compound.

Uniformly, highly dispersed metal catalyst and process for producing the same

Active carbon catalyst for recovering and removing sulfur oxides contained in flue gas by turning them into sulfuric acid by a catalytic desulfurization reaction. Powdery active carbon and fluororesin are kneaded by shearing force before being molded to a desired profile so that the inter-particulate gaps of powdery active carbon particles are made water-repellent. Flue gas preferably flows downwardly through a tower filled with such an active carbon catalyst, which is made to show a honeycomb structure having surfaces running only in a direction parallel to the flow. The activity of the catalyst maintains an enhanced level if dilute sulfuric acid or water is introduced into the active carbon from the top of the tower to cleanse the surface of the active carbon catalyst so that the catalyst layer is prevented from being clogged and contaminated by ashes and soot contained in flue gas.

Desulfurization of exhaust gases using activated carbon catalyst

A driving force control system for an automotive vehicle comprises an ordinary target driving force generator. It determines an ordinary target driving force in response to operator manipulation of the accelerator pedal and vehicle speed. The ordinary target driving force is a predetermined target value of driving force required to keep the vehicle rolling over the surface of a flat road that has 0% gradient. A running resistance increment generator determines an increment in running resistance from a standard resistance that is predetermined for the vehicle. A corrected target driving force generator receives the ordinary target driving force, the vehicle speed and the running resistance increment. It determines corrected target driving force. The corrected target driving force generator restrains the corrected target driving force in response to idle and brake signals from an idle switch and a brake switch.

Driving force control for automotive vehicle

A driving force control system for an automotive vehicle comprises a controller. The controller determines standard resistance (RLDTRQ) in response to vehicle speed (VSP), and it also determines an increment in running resistance (RESTRQ) from the standard resistance (RLDTRQ). The controller determines driving force correction (ADDFD) in response to the increment in running resistance (RESTRQ). The controller adds the driving force correction (ADDFD) to ordinary target driving force (tTd&num;n) to provide corrected target driving force (tTd). The controller converts the increment in running resistance (RESTRQ) into the driving force correction (ADDFD) at a rate that is variable in response to the increment in running resistance (RESTRQ).

Driving force control with gradient resistance torque dependent correction factor

A driving force control system for an automotive vehicle comprises a vehicle speed sensor detecting an operating parameter indicative of a speed of the vehicle and generating a vehicle speed signal indicative of said detected operating parameter. An ordinary target driving force generator determines an ordinary target driving force in response to operator manipulation of the accelerator pedal and the vehicle speed. The ordinary target driving force is a predetermined target value of driving force required to keep the vehicle rolling over the surface of a flat road that has 0% gradient. A running resistance increment generator determines an increment in running resistance from a standard resistance that is indicated by the ordinary target driving force. A corrected target driving force generator receives the ordinary target driving force, the vehicle speed and the running resistance increment. It determines corrected target driving force. The corrected target driving force generator keeps setting the ordinary target driving force as the corrected target driving force when the vehicle speed signal is low.

A process of forming a value of standard resistance for an automotive vehicle and a vehicle control system are disclosed. The process comprises sensing operating parameters indicative of operating conditions of the vehicle power train during operating an engine to keep the automotive vehicle rolling over the surface of a flat road in steady running state at each of said predetermined number of reading points of vehicle speed, A value of driving torque produced by the power train is derived from the sensed operating parameters at each of the predetermined number of reading points of vehicle speed. Finally, the derived values of driving torque are set as known standard resistance values at the predetermined number of reading points of vehicle speed, respectively.

Process of forming standard resistance values and vehicle control using same

High quality bisphenol A is produced from a neutral crystalline adduct of bisphenol A and phenol by fusing the adduct in an atmosphere having a maximum oxygen content of 0.005 % by volume, followed by evaporation of liberated phenol. The crystalline adduct may be mixed with an aliphatic carboxylic acid before the fusion to reduce the coloring of the product. When an acidic crystalline adduct is used, the use of a strong alkali salt of an aliphatic carboxylic acid is suitably used. Interior surfaces of the apparatuses for carrying out the fusion and evaporation are desirably washed with an organic solvent to remove oxygen therefrom. The evaporation of phenol is suitably performed by two stage steam stripping wherein a used stripping gas obtained in the second stage is employed as a stripping gas in the first stage while steam is used as the stripping gas in the second stage.

Process for the production of bishenol A

High quality bisphenol A is produced from a neutral crystalline adduct of bisphenol A and phenol by fusing the adduct in an atmosphere having a maximum oxygen content of 0.005% by volume, followed by evaporation of liberated phenol. The crystalline adduct may be mixed with an aliphatic carboxylic acid before the fusion to reduce the coloring of the product. When an acidic crystalline adduct is used, the use of a strong alkali salt of an aliphatic carboxylic acid is suitably used. Interior surfaces of the apparatuses for carrying out the fusion and evaporation are desirably washed with an organic solvent to remove oxygen therefrom. The evaporation of phenol is suitably performed by two stage steam stripping wherein a used stripping gas obtained in the second stage is employed as a stripping gas in the first stage while steam is used as the stripping gas in the second stage.

Process for the production of bisphenol A

High purity, crystalline adduct of bisphenol A and phenol is produced multi-stage crystallization of a phenolic slurry of bisphenol A with a crystal separation and washing step being interposed between each of the two stages. Each of the crystallization stage includes a series of crystallization towers operated at decreasing temperatures. The crystallization of the slurry is performed by continuously discharging a portion of the slurry from each of the crystallization towers, introducing the discharged slurry into one or more coolers and then recycling the cooled slurry to the tower. Another portion of the slurry in each crystallization slurry is continuously discharged, heated for dissolving fine crystals of the adduct and then recycled to the crystallization tower so that large crystals are grown in each of the crystallization steps. An apparatus having a plurality of coolers and suitable for effecting the above crystallization is also disclosed.

Process for the production of crystalline adduct of bisphenol A and

Process for the production of bisphenol A.

A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate containing about 0.1-2.5% by weight of aluminum and about 0.1-5% by weight of gallium in the skeleton thereof and having a particle size in the range of about 0.05-20 .mu.m, with at least 80% by weight of the crystalline aluminogallosilicate having a particle size of 0.1-10 .mu.m.

Process for the production of high-octane gasoline blending stock

A high-octane gasoline is produced by the conversion of a light hydrocarbon containing C.sub.2 -C.sub.7 paraffins and/or C.sub.2 -C.sub.7 olefins using a crystalline aluminogallosilicate catalyst of the formula:

Production of high-octane gas blending stock

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Ebina, Japan

Hiroaki Nishijima