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Institution

Mobil

About: Mobil is a based out in . It is known for research contribution in the topics: Catalysis & Zeolite. The organization has 7085 authors who have published 10642 publications receiving 237497 citations. The organization is also known as: Socony-Vacuum Oil Company & Standard Oil Company of New York.


Papers
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Patent
Arthur W. Chester1, Yung F. Chu1
19 Feb 1981
TL;DR: In this paper, a catalytic process is provided for converting gaseous feedstocks containing ethane to liquid aromatics by contacting the feedstock in the absence of added air or oxygen, under conversion conditions.
Abstract: A catalytic process is provided for converting gaseous feedstocks containing ethane to liquid aromatics by contacting said gaseous feeds in the absence of added air or oxygen, under conversion conditions, with a crystalline zeolite catalyst having incorporated therein a minor amount of gallium, thereby converting the ethane in the feedstock to aromatics and recovering a liquid mixture of benzene, toluene and xylene.

84 citations

Patent
Ralph M. Dessau1
30 Sep 1981
TL;DR: In this paper, an improved hydrocarbon separation process by the selective sorption properties of certain members of a novel class of zeolites is provided, which is characterized by a silica to alumina mole ratio greater than 12 and a Constraint Index within the approximate range of greater than about 2 to about 12.
Abstract: An improved hydrocarbon separation process by the selective sorption properties of certain members of a novel class of zeolites is provided. The novel class of zeolites is characterized by a silica to alumina mole ratio greater than 12 and a Constraint Index within the approximate range of greater than about 2 to about 12. The process of this invention involves selective separation of higher molecular weight hydrocarbon compounds in admixture with lower molecular weight hydrocarbon compounds within a homolgous series by contacting the respective mixture with a zeolite having a SiO 2 /Al 2 O 3 mole ratio of at least about 12 and a Constraint Index with the approximate range of greater than 2 to about 12, to effect the selective sorption of said higher molecular weight hydrocarbon compounds by said zeolite.

84 citations

Patent
Dale Richardson1, Roger W. Smith1
04 May 1995
TL;DR: A plastic reclosable fastener with a slider is presented in this paper for plastic bags and the like, where a structure (16, 17, 18, 19) is provided below the interlocking elements of the fastener, which when engaged by the slider can control the opening and closing of the Interlocking elements.
Abstract: A plastic reclosable fastener (11) with slider (10) particularly suited for plastic bags and the like where in the reclosable fastener (11) is provided with structure (16, 17, 18, 19) located below the interlocking elements (14, 15) of the fastener (11) which when engaged by the slider (10) controls the opening and closing of the interlocking elements (14, 15) of the fastener (11).

84 citations

Patent
22 Apr 1977
TL;DR: In this paper, a method for synthesizing zeolite ZSM-5 in the presence of one or more diamines and with a specifically defined reaction mixture composition is presented.
Abstract: As synthesized by conventional technique, zeolite ZSM-5 is crystallized in the presence of substantial amount of tetraalkylammonium cations, the alkyl groups of which contain 2 to 5 carbon atoms, such as, for example, tetrapropylammonium. When synthesized in the conventional way, ZSM-5 contains tetraalkylammonium cations as well as substantial amount of sodium ions. To obtain a more catalytically active form of ZSM-5, the sodium ions must be exchanged to very low levels. By synthesizing zeolite ZSM-5 according to the present method, i.e. in the presence of one or more diamines and with a specifically defined reaction mixture composition, ZSM-5 having different organic nitrogen-containing cations but the same crystal structure as conventionally prepared ZSM-5 is obtained. The ZSM-5 prepared in accordance hereto is very low in sodium content as synthesized.

84 citations

Journal ArticleDOI
01 Nov 1981-Nature
TL;DR: In this article, the crystal structure of a high silica zeolite ZSM-39, unit cell composition excluding residual water and occluded materials, was determined by X-ray powder diffraction.
Abstract: The crystal structure of a high silica zeolite ZSM-39, unit cell composition excluding residual water and occluded materials—(Na, tetramethylammonium ion, tetraethylammonium ion)0.4 (AlO2)0.4 (SiO2)135.6, was determined by X-ray powder diffraction. The framework is pseudoface-centred, pseudocubic with a = 19.36±0.02 A and ideal symmetry Fd3m. The framework consists of a space-filling arrangement of pentagonal dodecahedra and hexakaidecahedra and is isostructural with the 17 A cubic gas hydrate. The ZSM-39 framework is composed entirely of five- and six-rings which limits its sorptive and exchange properties. However, the large fraction of five-rings and the high Si/Al ratio (>40) impart a high thermal stability. ZSM-39 containing no aluminium constitutes the end member composition. Although ZSM-39 is the only synthetic zeolite analogue of a gas hydrate, we propose here two related hypothetical frameworks containing pentagonal dodecahedral cages.

84 citations


Authors

Showing all 7085 results

NameH-indexPapersCitations
Galen D. Stucky144958101796
James A. Russell124102487929
Thomas Bein10967742800
George J. Hirasaki6527814164
Kai-Kit Wong6160514680
James Paul5925213394
Sankaran Sundaresan5824110083
Fabio Rocca5732519186
Roland Winston5547313911
Kyger C. Lohmann5414410112
Maurice A. Biot5015437311
Kenneth E. Peters4817113920
Paul L. Stoffa472609323
Clarence D. Chang472399047
Bruce H. Wilkinson451186483
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
202112
202011
201910
201818
201712
201610