DLM-1 molecular sieve, process for preparing the same, and use thereof
AssigneesChina Petroleum & Chemical Corporation, Sinopec Dalian Research Institute of Petroleum and Petrochemicals Co., Ltd.
InventorsZhaoji Tang, Hongfei Fan
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Abstract
A DLM-1 molecular sieve, a process for preparing the molecular sieve, and use thereof in treating an organic substance are provided. The DLM-1 molecular sieve is an Al-SBA-15 molecular sieve, and has a schematic chemical composition as represented by the formula “first oxide*second oxide”. The first oxide is silica, the second oxide is alumina, and the content by mass percent of alumina in the schematic chemical composition is 2% to 85%. The DLM-1 molecular sieve is suitable for the hydrodenitrogenation reaction of heavy distillate oil, and is favorable for improving the hydrodenitrogenation activity.
Claims6
A process for preparing a DLM-1 molecular sieve, which comprises a step of contacting an amorphous silica alumina, a P123 triblock copolymer and water under a crystallization condition to obtain a molecular sieve;
- and optionally, a step of calcining said obtained molecular sieve,
- step 1) mixing an amorphous silica alumina and water to form a slurry;
- step 2) formulating an acidic solution containing a P123 triblock copolymer;
- and
- step 3) mixing the slurry and the acidic solution containing a P123 triblock copolymer under crystallization conditions to obtain the DLM-1 molecular sieve,
- wherein in a mass ratio of the amorphous silica alumina, on a dry basis, to water is 10:90 to 30:70, in step 2), the acidic solution has a pH value of 1-5, a mass content of the P123 triblock copolymer in the acidic solution is 0.5% to 5.0%, and in step 3), a mass ratio of the slurry, on the dry basis of the amorphous silica alumina, to the acidic solution, based on said P123 triblock copolymer, is 0.5:1 to 5:1.
Dependencies are inferred from the claim text.