Catalyst granules used in olefin disproportionation reaction and preparation method therefor
AssigneesChina Petroleum & Chemical Corporation, Shanghai Research Institute of Petrochemical Technology, Sinopec
InventorsJing DONG, Su LIU, Yangdong WANG
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Abstract
An integrated catalyst can be used in an olefin disproportionation reaction. The integrated catalyst contains a plurality of different integrated active phases. The relative positions among different active phases remain substantially unchanged during the olefin disproportionation reaction. The effective distance between respective bisecting planes of two adjacent different active phases is 0.5-5 mm, preferably 1-3 mm.
Claims23
An integrated catalyst for olefin disproportionation, wherein the integrated catalyst comprises a plurality of different active phases integrated together, and the relative position between the different active phases is kept substantially unchanged during the olefin disproportionation;
- characterized in that the effective distance between the respective bisecting surfaces of two adjacent different active phases is 0.5-5 mm, and preferably 1-3 mm.
A process of preparing magnesium oxide, comprising:
- 1) preparing a solution of soluble magnesium salt with a concentration of 5-20%, heating to 40-80° C. and stirring to be homogeneous;
- 2) adding a surfactant and a complexing agent, wherein the molar ratio of the surfactant to magnesium ions of the magnesium salt is 0.5-3%, and the molar ratio of the complexing agent to the magnesium ions of the magnesium salt is 1-8%;
- 3) adding a precipitator, wherein the molar ratio of the precipitator to magnesium ions is 2:1-5:1;
- 4) washing the precipitate obtained in the step 3) with water, washing with absolute ethanol, and drying at 70-90° C. for 8-12 h;
- and
- 5) calcining the product obtained in the step 4), controlling the heating rate to be 5-15° C./min, and calcining at 400-520° C. for 3-6 h.
Dependencies are inferred from the claim text.