Light hydrocarbon non-hydrogenation modified catalyst, preparing process and application thereof
A non-hydrogen upgrading and catalyst technology, applied in the treatment of hydrocarbon oil, hydrotreating process, petroleum industry, etc., can solve the problems of low octane number and low octane number of gasoline, so as to improve the octane number and reduce the The effect of olefin content, good selective cracking activity
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[0015] There are two methods for preparing the catalyst provided by the invention. One is to prepare the carrier first, then introduce the active component into the carrier by impregnation, and then carry out steam treatment to obtain the catalyst. The other method is to oxidize the active component When the carrier is prepared, it is added to it, and after molding and roasting, it is treated with steam to obtain the catalyst.
[0016] The first method provided by the present invention comprises:
[0017] (1) Mix HZSM-5 and α-alumina monohydrate powder at a dry basis weight ratio of 50-80:50-20
[0018] Shaping, drying, and roasting to obtain the carrier,
[0019] (2) impregnate the carrier prepared in step (1) with chlorinated mixed rare earth or antimony soluble salt solution, dry
[0020] roasted after drying,
[0021] (3) After step (2) is roasted, the catalyst is heated up to 500-600°C in the air flow, and then steamed with pure water.
[0022] The steam trea...
example 1
[0034] Preparation of the catalyst of the present invention.
[0035](1) Prepare the carrier: get 130 grams of HZSM-5 zeolite powder (produced by Shanghai Huaheng Catalyst Factory) with a silicon-aluminum ratio of 56, 70 grams of α-alumina monohydrate powder (produced by German Condea Company), mix well, add 2 A solution made of 1:1 nitric acid and 50 ml of water was kneaded into a mass, extruded into a strip with a diameter of 2 mm and a length of 3 to 5 mm in an extruder, dried at 110°C for 12 hours, and calcined at 570°C for 4 hours.
[0036] (2) Introduce active components: take 100 grams of the above-mentioned carrier, use 100 milliliters containing 1.35 grams of chlorinated mixed rare earths (produced by Inner Mongolia Baotou Rare Earth Industry Company, wherein lanthanum oxide 31%, cerium oxide 51%, praseodymium oxide 14%, neodymium oxide 4%, X-ray fluorescence analysis) aqueous solution was soaked at 60°C for 2 hours, dried at 110°C for 10 hours, and calcined at 550°C ...
example 2
[0040] Catalyst B is prepared by the method of example 1, and difference is that the carrier that (1) step is made is carried out steam treatment earlier, then introduces mixed rare earth with the method for (2) step, in the catalyst B that obtains, mixed rare earth oxide content is 0.45% by mass.
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