A kind of hybrid organic framework material loaded with rare earth and its preparation method and application

Abstract

The invention discloses a rare earth-supporting hybrid metal organic skeleton material preparation method, which comprises: (1) adding 1,4,5,8-naphthalene tetracarboxylic acid and a copper source into a solvent, mixing uniformly, carrying out first ultrasonic treatment, adding a soluble starch aqueous solution when a precipitate appears, and continuously carrying out second ultrasonic treatment; (2) filtering the obtained mixture, placing the solid obtained through the filtering into an acetone aqueous solution containing an ammonium salt, stirring, filtering, carrying out water washing, and drying to obtain a hybrid metal organic skeleton material; and (3) loading a rare earth metal inorganic salt onto the metal organic skeleton material so as to obtain the rare earth-supporting hybrid metal organic skeleton material. According to the present invention, the hybrid metal organic skeleton material prepared through the method has characteristics of strong thermal stability, suitable pore structure, more activity sites and good spatial symmetry, and can be used for the adsorption and desulfurization process of gasoline, diesel oil, and other fuel oils.

Description

technical field [0001] The invention relates to a rare earth-loaded hybrid metal organic framework material and its preparation method application, in particular to a rare earth-loaded organic framework material which can be used for fuel oil adsorption, its preparation method and application. Background technique [0002] With the world's increasing emphasis on environmental protection and the increasingly stringent environmental regulations, the production of low-sulfur and ultra-low-sulfur fuel oil is gradually attracting people's attention. The main forms of sulfide in fuels are mercaptans, sulfides, disulfides and thiophene organic sulfides, especially the thiophenes have a large content and are difficult to remove. Although traditional hydrodesulfurization can effectively remove sulfides such as thiophenes, there are disadvantages such as loss of octane number, high equipment investment and operating costs, so other low-cost fuel oil deep desulfurization technologies a...

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Problems solved by technology

However, the development cost of imidazole metal-organic framework materials is very high, and its ligand methylimidazole is corrosive and expensive, so it is not conducive to product promotion and application

In addition, the zeolite imidazole framework material falls off during the regeneration process, resulting in a limited service life of the material; moreover, the adsorbent is developed for the mercaptan components in gasoline, and its scope of application is limited, which is not helpful for the increasingly inferior gasoline and diesel desulfurization applications technology

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