Bulletin of The Japan Petroleum Institute最新文献_第8页

Radiation-initiated Thermal Cracking of n-Octane Vapor 正辛烷蒸汽辐射引发的热裂解

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.58

S. Matsuoka, T. Tamura, K. Oshima, Y. Oshima

引用次数: 0

Steam Reforming of Hydrocarbons on Noble Metal Catalysts (Part 2) 贵金属催化剂上烃类蒸汽重整(二)

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.3

E. Kikuchi, Y. Yamazaki, Y. Morita

{"title":"Steam Reforming of Hydrocarbons on Noble Metal Catalysts (Part 2)","authors":"E. Kikuchi, Y. Yamazaki, Y. Morita","doi":"10.1627/JPI1959.17.3","DOIUrl":"https://doi.org/10.1627/JPI1959.17.3","url":null,"abstract":"Steam-reforming of n-heptane on rhodium catalysts was investigated under atmospheric pressure and in the temperature range from 550 to 800°C. The degree of dispersion of supported rhodium was determined from hydrogen chemisorption data measured at 25°C by a pulse technique.Rhodium supported on silica was found to sinter considerably on reduction in hydrogen flow, and its activity also decreased. On the other hand, γ-alumina support was found to keep the dispersion of rhodium unchanged on reduction in the temperature range from 550 to 800°C.The activity per weight of a catalyst increased with the concentration of rhodium supported on γ-alumina. The activity was correlated with the amount of hydrogen uptake when more than 0.2% of rhodium was supported.The product composition from reactions at 600°C was compared with the equilibrium composition determined by the following two reactions: i) CH4+H2O=CO+3H2, and ii) CO+H2O=CO2+H2. The composition was found to deviate considerably from the equilibrium at earlier stages of the reaction, but to approach it with increasing conversion of n-heptane. It was suggested that the rate of these equilibrating reactions, especially of the reaction ii), was smaller than that of the initial decomposition of the feed hydrocarbon.","PeriodicalId":9596,"journal":{"name":"Bulletin of The Japan Petroleum Institute","volume":"61 1","pages":"3-8"},"PeriodicalIF":0.0,"publicationDate":"1975-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84214441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Flame Spreading on Gelled JP-4 Pool 凝胶JP-4池上火焰蔓延

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.95

H. Ishida, A. Iwama

{"title":"Flame Spreading on Gelled JP-4 Pool","authors":"H. Ishida, A. Iwama","doi":"10.1627/JPI1959.17.95","DOIUrl":"https://doi.org/10.1627/JPI1959.17.95","url":null,"abstract":"For the gelled JP-4 of an oil-in-water emulsion type which includes 96∼99% oil concentration by volume as an internal phase and has the drainage temperature higher than 70°C in confined vessel, the flame spreading aspects with a pool combustion were observed by taking movie, and the measurement of temperatures, on and above the surface of the gel from the time when the flame is coming over to the time when it has passed away, was carried out with thermocouples fixed in place.While the flame is spreading on the gelled JP-4, an advance liquid flow ahead of the flame can be found in case of the initial gel temperatures lower than the apparent flash points (26∼35°C) measured by means of open cup method. This liquid flow invades on to the surface of the virgin gel, issued from the upstream region covered already with luminous flame, and is not formed by radiative and conductive heat transfer from the flame pillar to the virgin gel surface. In view point that the temperatures of foregoing liquid flow is 10∼20°C at the initial level of gel surface and the flash point of the original JP-4 is -23°C, a large part of the low hydrocarbon fractions seem to have burned in the flame zone before streaming out on the virgin gel surface. The behavior of liquid flow was observed in detail with fine aluminum powders sowed in the vicinity of the ignition position. As the result, it is found that in the foregoing liquid flow there is a strong convection due to temperature gradient. Thus, the covering of the liquid flow on the virgin gel plays a role to reduce the drainage rate of the gel, protecting the gel surface from being exposed in air in the place close to hot flame, and the flame spreading velocity can be suppressed by one-tenth to one-twentieth, compared to that of the original JP-4.","PeriodicalId":9596,"journal":{"name":"Bulletin of The Japan Petroleum Institute","volume":"52 1","pages":"95-99"},"PeriodicalIF":0.0,"publicationDate":"1975-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84696178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Studies on the Removal and Recovery of Organic Sulfur Compounds in Hydrocarbon Oils by Liquid-Liquid Extraction (IV) 液-液萃取法去除和回收烃类油中有机硫化物的研究(IV)

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.108

T. Yotsuyanagi, T. Kamidate, K. Aomura

引用次数: 0

Granular Activated Carbon Produced from Asphalt 由沥青生产的颗粒活性炭

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.143

T. Amemiya, H. Miyake, A. Yokogawa, Mitsuyuki Mitooka, S. Mitsui, K. Ishibashi, J. Kawabata, Y. Tazaki

引用次数: 0

A New Apparatus for Measuring Vapor-Liquid Equilibria of Gas-Solvent Systems at Constant Pressure 一种测量恒压气-溶剂系统气液平衡的新装置

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.9

Daisuke Hoshino, Kunio Nagahama, M. Hirata

引用次数: 2

Isomerization of Butene over ZnO-SiO2 丁烯在ZnO-SiO2上的异构化

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.65

T. Sumiyoshi, K. Tanabe, H. Hattori

引用次数: 5

Effects of Gasoline Volatility on Warm-up of Automobiles 汽油挥发性对汽车预热性能的影响

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.134

Hideo Yokoyama, E. Yoshida, K. Nakajima

引用次数: 0

The Reaction of Cobalt Hydrocarbonyls Substituted by Tertiary Phosphines with an Olefin 叔膦取代钴羰基与烯烃的反应

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.83

Masato Tanaka, Yoshihisa Watanabe, T. Mitsudo, Y. Takegami

引用次数: 0

Catalytic Cracking of Ethanethiol over Various Solid Acid Catalysts 不同固体酸催化剂对乙硫醇催化裂化的影响

Bulletin of The Japan Petroleum Institute Pub Date : 1975-04-25 DOI: 10.1627/JPI1959.17.51

M. Sugioka, K. Aomura

{"title":"Catalytic Cracking of Ethanethiol over Various Solid Acid Catalysts","authors":"M. Sugioka, K. Aomura","doi":"10.1627/JPI1959.17.51","DOIUrl":"https://doi.org/10.1627/JPI1959.17.51","url":null,"abstract":"Experimental studies were carried out to determine what kind of catalysts are effective for the cracking of ethanethiol using a pulse reactor.Solid acid catalysts such as silica-alumina (SA), solid phosphoric acid (SPA), alumina (Al2O3), hydrogen Y zeolite (HY) and metal Y zeolite (MeY) showed a definite activity in the cracking of ethanethiol. However, solid bases such as CaO and MgO showed no activity.From these results, it may be said that the solid acid catalysts accelerate the cracking of ethanethiol. The cracking products of ethanethiol on SA, SPA, HY and MeY were only ethylene and hydrogen sulfide. In the case of ethanethiol cracking on Al2O3, the products were ethylene, hydrogen sulfide and a substantial amount of diethylsulfide which was formed by the disproportionation of ethanethiol.Furthermore, detailed studies were made on the effective active sites of the solid acid catalysts which showed the activity in the cracking of ethanethiol. And it was concluded that the active sites of SA, SPA and HY were the Bronsted acid sites, and that the active sites of Al2O3 were both Lewis acid sites and basic sites, and that the active sites of MeY were mainly the metal ions.In light of the nature of the active sites, reaction mechanisms were proposed for the cracking of ethanethiol over individual solid acid catalysts.","PeriodicalId":9596,"journal":{"name":"Bulletin of The Japan Petroleum Institute","volume":"27 1","pages":"51-57"},"PeriodicalIF":0.0,"publicationDate":"1975-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90165274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12