摘要:
A catalyst comprises a hydrogenation/dehydrogenation component, such as a noble metal, deposited on an acidic solid product formed by modifying a Group IVB metal oxide with an oxyanion of a Group VIB metal. An example of this catalyst is platinum deposited on zirconia modified with tungstate. The catalyst may be used, for example, to isomerize C4 to C8 paraffins.
摘要:
L'alkylation d'une isoparaffine avec une oléfine, afin d'obtenir un alkylat, s'effectue en présence d'une zéolite, en tant que catalyseur, dont les caractéristiques de diffraction des rayons X sont indiquées dans le tableau.
摘要:
A process for producing pyridine or picoline compounds, comprises the steps: a) reacting a reactant feedstream comprising ammonia and at least one C1-5 carbonyl reactant in the presence of a molecular sieve catalyst to produce a primary product stream comprising pyridine or picoline products and polyalkylpyridines; b) isolating from the primary product stream a product fraction comprising pyridine or picoline products, and a polyalkylpyridine fraction comprising polyalkylpyridines; and c) contacting the polyalkylpyridine fraction with a molecular sieve catalyst to produce a secondary product stream comprising pyridine or picoline products, preferably by recycling the polyalkylpyridine fraction back to step (a).
摘要:
The alkylation of an isoparaffin with an olefin to provide alkylate is carried out in the presence of, as catalyst, a zeolite having the above X-ray diffraction lines.
摘要:
The process comprises the ring-opening of aromatics and isomerization of aliphatics. The feedstream (10) comprises hydrocarbons having 6 carbon atoms. The process involves the use of a recycle stream (62) containing a source of chlorine. The process uses two reactors in series wherein the first reactor (20) contains a ring-opening catalyst while the second reactor (40), downstream of the first reactor, contains an isomerization catalyst wherein aliphatics are isomerized.
摘要:
A feedstock containing one or more C9+ aromatic compounds, and optionally toluene, is converted over a catalyst comprising a zeolite possessing a Constraint Index of 1 to 3 to provide a product which contains substantial amounts of benzene and xylene(s).
摘要:
The process comprises the ring-opening of aromatics and isomerization of aliphatics. The feedstream (10) comprises hydrocarbons having 6 carbon atoms. The process involves the use of a recycle stream (62) containing a source of chlorine. The process uses two reactors in series wherein the first reactor (20) contains a ring-opening catalyst while the second reactor (40), downstream of the first reactor, contains an isomerization catalyst wherein aliphatics are isomerized.
摘要:
A catalyst comprises a hydrogenation/dehydrogenation component, such as a noble metal, deposited on an acidic solid product formed by modifying a Group IVB metal oxide with an oxyanion of a Group VIB metal. An example of this catalyst is platinum deposited on zirconia modified with tungstate. The catalyst may be used, for example, to isomerize C4 to C8 paraffins.
摘要:
Une charge contenant un composé C9+ aromatique ou davantage et éventuellement du toluène, est convertie par un catalyseur comprenant un zéolite possédant un indice de contrainte de 1 à 3 pour donner un produit contenant des quantités importantes de benzène et de xylène(s).