Catalyst containing modified EUO type molecular sieve, and preparation method and application thereof
A technology of molecular sieves and catalysts, which is applied in the field of catalysts and preparations for the conversion of p-xylene and ethylbenzene, which can solve the problems of shortening the service life of catalysts and deactivation of catalysts, and achieve the effects of improving selectivity, reducing side reactions, and reducing losses
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example Construction
[0020] A specific preparation method of the catalyst of the present invention is provided below, taking EU-1 molecular sieve as an example, but not limited to this method, the specific steps are:
[0021] (1) loading rare earth metal components on EU-1 molecular sieves, drying and roasting to obtain EU-1 molecular sieves modified by rare earth metal oxides;
[0022] (2) loading the copper component on the rare earth metal oxide modified molecular sieve prepared in step (1), drying and roasting to obtain the modified EU-1 molecular sieve of the present invention;
[0023] (3) Aluminum hydroxide, IV A The elemental compound, peptizer and deionized water are fully mixed and peptized into a viscous substance to obtain IV A a mixture of elemental components and a binder;
[0024] (4) The modified EU-1 molecular sieve prepared in step (2), the mixture prepared in step (3), extrusion aid and water are fully kneaded into a plastic paste, extruded into strips, dried and roasted to ob...
Embodiment 1
[0039] Example 1 (if there is no special note below, the percentages are percentages by weight)
[0040] The preparation steps of a kind of catalyst of the present invention are as follows:
[0041] (1) Take 300 grams of EU-1 molecular sieve with a silica / alumina molar ratio of 40, and prepare 450 milliliters of lanthanum nitrate solution with a content of 50 grams as lanthanum oxide. Fully mix the above solution containing lanthanum nitrate with EU-1 molecular sieve, dry at 110°C and roast at 500°C for 4 hours to obtain lanthanum-modified EU-1 molecular sieve, whose composition (by weight, the same below) is: Lanthanum oxide / EU-1 molecular sieve=1 / 6.
[0042] (2) Use copper acetate and water to prepare 200 ml of copper acetate solution with a content of 20 grams of copper oxide, add the above solution to 140 grams of lanthanum-modified EU-1 molecular sieve prepared in step (1), and mix thoroughly , after drying at 150°C and roasting at 420°C for 12 hours, a copper / lanthan...
Embodiment 2
[0047] The preparation method of a catalyst of the present invention is the same as that of Example 1, except that the silica / alumina molar ratio of the EU-1 molecular sieve used is 38, and the catalyst carrier obtained consists of: copper oxide / cerium oxide / EU -1 Molecular sieve / tin / alumina=10 / 10 / 60 / 2 / 18, the code is E-2, the catalyst composition is shown in Table 2, and the reaction results are shown in Table 3.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More