Hydroprocessing catalyst and its prepn process
A hydrotreating and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of no synergistic effect, poor molecular sieve dispersion effect, etc., and achieve high isomerization selectivity and product yield. The effect of high rate and low cracking rate
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[0025] In the process of preparing the TON structure molecular sieve provided by the present invention, other raw materials and operating conditions can be determined according to the prior art, such as various TON structure molecular sieves (ZSM-22, Theta-1, ISI-1, KZ-2 in the prior art) and NU-10) raw materials and operating conditions used in the preparation process. Its change is: the templating agent described in step (a) is a double templating agent, that is, it is composed of two templating agents, wherein the main templating agent is a diamine compound, which can be C2 -C 10 The diamine, preferably C 5 -C 8 diamine, more preferably hexamethylenediamine; the auxiliary templating agent is generally a nitrogen-containing heterocyclic compound, preferably a pyrrole derivative, more preferably pyrrolidine. Said auxiliary agent can be C 5 -C 10 Alkanes, preferably C 5 -C 8 n-alkanes or naphthenes, more preferably C 5 -C 7 Naphthenic. The IV of the periodic table A ...
Embodiment 1～3
[0032] The preparation method of the TON type molecular sieve involved in the catalyst of the present invention.
[0033] Take a certain amount of water and put it in a beaker, add silicon source, aluminum source and alkali in turn, mix thoroughly, then add the main template agent, auxiliary template agent and auxiliary agent in turn, or mix the three organic substances and add them together, after fully mixing , moved into an autoclave for crystallization, and samples E-1, E-2, E-3, and C-1 were obtained after post-treatment. Samples E-1, E-2, and E-3 were kept at 550°C for 2 hours to remove the template agent; the ammonium was exchanged twice, and the condition was to exchange 4 hours at 80°C with 10% ammonium nitrate solution whose weight was 5 times that of the molecular sieve. , and then roasted at 550°C for 4 hours; then use a mixed acid solution with a molar concentration of nitric acid of 0.5mol / L and a molar concentration of tartaric acid of 0.2mol / L, and treat it at ...
Embodiment 4
[0048] A kind of preparation method of catalyst of the present invention
[0049] The preparation of the catalyst is the same as in Comparative Example 2, except that 650 g of TON molecular sieve prepared in Example 1 is used to replace the SAPO-11 molecular sieve, and only Pt is contained in the impregnation solution, and finally the catalyst of the present invention containing 0.6w% Pt is obtained, and the number is E-4 , the evaluation conditions and results are shown in Table 3 and Table 4.
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