Abstract:
The present invention relates to new crystalline zeolite SSZ-42 prepared by processes for preparing crystalline molecular sieves, particularly large pore zeolites, using an organic templating agent selected from the group consisting of N-benzyl-1,4-diazabicyclo�2.2.2!octane cations and N-benzyl-1-azabicyclo�2.2.2!octane cations.
Abstract:
A process for shape selective hydrocarbon conversion involves contacting a hydrocarbon feedstream under conversion conditions with a catalytic molecular sieve which has been modified by treatment with an amino silane polymer while molecular sieve acid sites are protected. When the process is toluene disproportionation, a toluene feedstream may also contain a second silicon source which is a high pxylene selectivating agent. The invention also includes the modification method and the shape selective catalyst which results from the modification.
Abstract:
An extruded C8 alkylaromatic isomerization catalyst is described. The catalyst has an average pore diameter in a range of about 110 Å to about 155 Å measured by BJH adsorption method and a pore volume less than about 0.62 cc/g measured by N2 porosimetry. A process for isomerizing a non-equilibrium C8 aromatic feed to provide an isomerized product is also described.
Abstract:
A continuous catalytic alkylation reaction and catalyst reactivation process is carried out using a simulated moving catalyst bed to effect simultaneously in different zones of a multi-zone, fixed catalyst bed, an alkylation reaction and a reactivation of catalyst. The catalyst of the present invention is a crystalline aluminosilicate zeolite composited with a Group VIII metal hydrogenation agent, and the reactivation medium utilized includes alkylatable hydrocarbon and hydrogen.
Abstract:
1. IN AN ALKYLATION PROCESS IN WHICH AN ALKYLATABLE ORGANIC COMPOUND IS CONTACTED AND REACTED WITH AN ALKYLATION AGENT IN A CATALYTIC CONVERSION ZONE CONTAINING A CATALYST COMPOSITION COMPRISING AT LEAST ONE HYDROGENATION AGENT OF THE GROUP OF NICKEL, PLATINUM, PALLADIUM, RUTHENIUM AND RHODIUM AND THREE-DIMENSIONAL CRYSTALLINE ZEOLITIC MOLECULAR SIEVE HAVING A PORE DIAMETER LARGE ENOUGH TO ADSORB ORTHO-DIETHYLBENZENE, AN ALKALI METAL CONTENT OF LESS THAN 3.5 WEIGHT PERCENT ON A SOLIDS BASIS, AN SIO2/AL2O/3 MOLAR RATIO OF AT LEAST 7.0. SAID CONTACT AND REACTION BEING CONTINUED UNTIL THE ALKYLATION ACTIVITY OF THE CATALYST HAS DECREASED, THE IMPROVEMENT WHICH COMPRISES PERIDICALLY CONTACTING A DHYDROGENATING THE CATALYST COMPOSITION AT A TEMPERATURE OF FROM 80*F. TO 572*F. WITH A LIQUID SOLUTION OF HYDROGEN IN A SATURATED HYDROCARBON HAVING FROM 4 TO 12 CARBON ATOMS, SAID SOLUTION CONTAINING AT LEAST 0.1 MOLE PERCENT DISSOLVED HYDROGEN, UNTIL THE ALKYLATION ACTIVITY OF THE CATALYST IS IMPROVED.
Abstract:
A NEW AND UNUSUAL FAMILY OF CRYSTALLINE ZEOLITES IDENTIFIED AS ZEOLITE ZSM-4 ARE USED AS CATALYSTS FOR THE ISOMERIZATION AND DISPROPORTIONATION OF AROMATIC HYDROCARBONS.
Abstract:
In an embodiment a catalyst comprises a medium or large pore zeolite having germanium incorporated into the zeolite framework. The zeolite can have a pore structure that is one dimensional, two dimensional or three dimensional. A metal selected from Group 10 can be deposited on the zeolite. In an embodiment, a process for synthesizing the zeolite comprises preparing a medium pore zeolite containing germanium in the framework of the zeolite and calcining the zeolite. In an embodiment, the catalyst can be used in a process for the conversion of hydrocarbons comprising contacting a hydrocarbon stream containing alkanes, olefins, or mixtures thereof having 2 to 12 carbon atoms per molecule with the catalyst and recovering the product.
Abstract:
The present invention relates to a method for producing a zeolite catalyst useful for aromatization of a lower alkane, a zeolite catalyst useful for aromatization of a lower alkane obtainable by said method and a process for aromatization of a lower alkane using the zeolite catalyst of the present invention.
Abstract:
The invention relates to a hydrocracking process involving the steps of reacting a diphenyl alkane having a formulation of R1R2C(Ph)-(C)n(H)m-C(Ph)R3R4 with hydrogen using a catalyst containing a metal selected from the group consisting of Group IB and Group VIII metal compounds, preferably on an acidic support, to produce alkylbenzene(s) having a structure of R1R2C(Ph)R5 and R6(Ph)CR3R4; wherein the total number of carbon atoms for R5 and R6 is equal to n; wherein R1, R2, R3, R4 each is a H or a hydrocarbon group having 1-10 carbon atoms.
Abstract translation:本发明涉及一种加氢裂化方法,其涉及使用含有选自以下的金属的催化剂使具有R1R2C(Ph) - (C)n(H)mC(Ph)R3R4的配方的二苯基烷烃与氢气反应 IB族和VIII族金属化合物,优选在酸性载体上,以产生具有R 1 R 2 C(Ph)R 5和R 6(Ph)CR 3 R 4结构的烷基苯; 其中R5和R6的碳原子总数等于n; 其中R1,R2,R3,R4各自为H或具有1-10个碳原子的烃基。