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Novel nano ferrite adsorption desulfurization catalyst and preparation method thereof

A nano-ferrite, adsorption desulfurization technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problem of heavy oil desulfurization effect is not obvious, The catalyst preparation process is cumbersome, the sulfur capacity is small, etc., to achieve the effect of simple and easy preparation process, mild conditions, and high desulfurization selectivity

Inactive Publication Date: 2015-07-01
DALIAN UNIV OF TECH +1
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Problems solved by technology

[0005] Chinese patent CN201410254990.1 discloses a fuel oil deep adsorption desulfurization catalyst and its preparation method and application. It provides a fuel oil deep adsorption desulfurization catalyst with high specific surface area, mild reaction, high strength and low hydrogen consumption. However, the preparation of the catalyst The process is cumbersome and the sulfur capacity is small, so the application is limited
[0006] Chinese patent CN101940908 also discloses an ultra-deep adsorption desulfurizer, the adsorbent is mainly zinc oxide, which can only be used for desulfurization of light oil products, and the desulfurization effect on heavy oil products is not obvious

Method used

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  • Novel nano ferrite adsorption desulfurization catalyst and preparation method thereof
  • Novel nano ferrite adsorption desulfurization catalyst and preparation method thereof

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Embodiment 1

[0020] Embodiment 1: nanometer zinc ferrite (ZnFe 2 o 4 ) preparation of adsorption desulfurization catalyst

[0021] Dissolve 33mmol of zinc nitric acid, 67mmol of iron nitric acid and 200mmol of urea in 1665mmol of trace water, wherein the molar ratio of urea, metal nitrate, and water is 2:1:16.65. The solution decomposes for 15 minutes after being rapidly heated in a microwave oven with a power of 800W. During the reaction process, a large amount of flammable gas is produced, and a large amount of heat is released at the same time, so that the reactant will burn by itself after reaching the spontaneous ignition point. After the reaction is completed, the obtained solid material is nano-zinc ferrite (ZnFe 2 o 4 ) adsorption desulfurization catalyst. By replacing urea with one of fuel polyethylene glycol, sorbitol and glycine, nano-zinc ferrite (ZnFeO) with different particle sizes can also be prepared. 2 o 4 ) adsorption desulfurization catalyst.

Embodiment 2

[0022] Embodiment 2: nano nickel ferrite (NiFe 2 o 4 ) preparation of adsorption desulfurization catalyst

[0023] Dissolve 33mmol of nickel nitric acid, 67mmol of iron nitric acid and 50mmol of glycine in 1665mmol of trace water, wherein the molar ratio of glycine, metal nitrate, and water is 0.5:1:16.65. The solution decomposes for 30 minutes after being rapidly heated in a microwave oven with a power of 1200W. During the reaction process, a large amount of flammable gas is produced, and a large amount of heat is released at the same time, so that the reactant will burn by itself after reaching the spontaneous ignition point. After the reaction is completed, the obtained solid material is the nano-nickel ferrite adsorption desulfurization catalyst.

Embodiment 3

[0024] Embodiment 3: Nano magnesium ferrite (MgFe 2 o 4 ) preparation of adsorption desulfurization catalyst

[0025] Dissolve 33mmol of magnesium nitric acid, 67mmol of ferric nitric acid and 170mmol of polyethylene glycol in 1665mmol of trace water, wherein the molar ratio of polyethylene glycol, metal nitrate, and water is 1.7:1:16.65. The solution decomposes for 10 minutes after being rapidly heated in a microwave oven with a power of 400W. During the reaction process, a large amount of flammable gas is produced, and a large amount of heat is released at the same time, so that the reactant will burn by itself after reaching the spontaneous ignition point. After the reaction is completed, the obtained solid material is nano-magnesium ferrite (MgFe 2 o 4 ) adsorption desulfurization catalyst.

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Abstract

The invention belongs to the technical field of fuel processing and petroleum chemical engineering, and relates to a novel nano ferrite adsorption desulfurization catalyst MeFe2O4, wherein Me comprises but not the same with Mg, Zn, Ni, Co and Cu. The preparation method comprises the following steps: dissolving transition metal nitrate, Fe-containing nitrate and fuels in water, heating the obtained solution in a microwave furnace rapidly, decomposing so as to generate a great quantity of combustible gases and emit a great amount of heat, and combusting reactants reaching the spontaneous ignition point; and reacting so as to obtain a solid material, namely the novel nano ferrite adsorption desulfurization catalyst. The novel nano ferrite adsorption desulfurization catalyst is relatively high in desulfurization selectivity, can prevent the loss of octane value and cetane value due to olefins hydrogenation while deeply removing sulfocompound in fuel oil, and has relatively good industrial application prospect.

Description

technical field [0001] The invention belongs to the technical field of fuel processing and petrochemical industry, and relates to a novel ferrite catalyst used in ultra-deep adsorption desulfurization of distillate oil. Specifically, a microwave-induced combustion synthesis method is used to treat precursors such as a transition metal salt solution, an iron-containing salt solution, and a reducing agent at a certain stoichiometric ratio, and a stable spinel-structured nanoferrite catalyst (MeFe 2 o 4 ) and the catalytic application of the prepared material in ultra-deep adsorption desulfurization. Background technique [0002] With the shortage of oil resources and the restrictions on the sulfur content of oil products around the world, it is the general trend to make gasoline, diesel and other fuels low-sulfur and clean. At present, the commonly used hydrodesulfurization method effectively removes inorganic sulfur and simple organic sulfides, but it is difficult to remove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J23/75B01J23/745B01J23/80C10G25/00
Inventor 梁长海陈霄王军虎马姆杜·艾哈迈德
Owner DALIAN UNIV OF TECH
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