Calcium oxide-loaded porous alkaline carbon material with magnetic property as well as preparation method and application of calcium oxide-loaded porous alkaline carbon material

A technology of magnetic properties and calcium oxide, applied in chemical instruments and methods, catalyst activation/preparation, liquid carbon-containing fuels, etc., can solve the problems of land occupation, unused, and no utilization channels, etc., achieve good magnetic properties, reduce Decomposition temperature, realize the effect of multiple recycling

Active Publication Date: 2022-01-28
SHANDONG JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, industrial by-product gypsum is mainly used as cement retarder, alkalinity cement, building gypsum, plasterboard, calcium sulfate whisker and whisker papermaking, ammonium sulfate fertilizer, transformation of saline-alkali land, auxiliary cement reinforcement of soft soil foundation for Road construction, etc., but most of them are not used, occupying a large amount of land and stacked in the open air, which has become industrial waste that seriously pollutes the environment
However, there is currently no reasonable way to utilize it, resulting in the slow development of large-scale utilization of industrial by-product gypsum

Method used

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  • Calcium oxide-loaded porous alkaline carbon material with magnetic property as well as preparation method and application of calcium oxide-loaded porous alkaline carbon material
  • Calcium oxide-loaded porous alkaline carbon material with magnetic property as well as preparation method and application of calcium oxide-loaded porous alkaline carbon material
  • Calcium oxide-loaded porous alkaline carbon material with magnetic property as well as preparation method and application of calcium oxide-loaded porous alkaline carbon material

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The preparation of the magnetically porous basic carbon material loaded with calcium oxide involves the following steps:

[0045] (1) Pretreatment of solid waste phosphogypsum

[0046] The solid waste phosphogypsum is dried in an oven at 50°C to constant weight, crushed by a crusher, ground by a ball mill, and sieved by a standard sieve to obtain pretreated solid waste phosphogypsum powder with a particle size of less than 300 mesh. The XRD pattern and SEM photo of solid waste phosphogypsum are as follows figure 1 and figure 2 shown.

[0047] (2) Preparation of porous basic carbon materials

[0048] Mix 1 g of pretreated solid waste phosphogypsum, 2 g of coal tar pitch (purchased from Hebei Fengtaiyuan Energy Technology Co., Ltd.) and 1 g of ferric chloride, dissolve in 50 mL of nitrogen methyl pyrrolidone solution, and stir magnetically for 3 h at 80 ° C . The solvent in the reaction system was evaporated to dryness to obtain a gray-black solid (porous basic carb...

Embodiment 2

[0054] The preparation of the magnetically porous basic carbon material loaded with calcium oxide involves the following steps:

[0055] (1) Pretreatment of solid waste desulfurization gypsum

[0056] The solid waste desulfurized gypsum was dried in an oven at 60°C to constant weight, crushed by a crusher, ground by a ball mill, and sieved by a standard sieve to obtain solid waste desulfurized gypsum powder with a particle size of less than 250 mesh.

[0057] (2) Preparation of porous basic carbon materials

[0058] Mix 1g of pretreated solid waste desulfurization gypsum, 3g of petroleum asphalt (purchased from Hebei Fengtaiyuan Energy Technology Co., Ltd.) and 1.5g of ferrous chloride, dissolve in 50mL of carbon tetrachloride solution, and magnetically Stir for 3h. The solvent in the reaction system was evaporated to dryness to obtain a gray-black solid (porous basic carbon material precursor).

[0059] Put the gray-black solid in a tube furnace (nitrogen atmosphere), cont...

Embodiment 3

[0063] The preparation of the magnetically porous basic carbon material loaded with calcium oxide involves the following steps:

[0064] (1) Pretreatment of solid waste citrate gypsum

[0065] The solid waste citric acid gypsum was dried in an oven at 70°C to constant weight, crushed by a crusher, ground by a ball mill, and sieved by a standard sieve to obtain solid waste citric acid gypsum powder with a particle size below 250 mesh.

[0066] (2) Preparation of porous basic carbon materials

[0067] Mix 2 g of pretreated solid waste citrate gypsum, 8 g of petroleum pitch (purchased from Hebei Fengtaiyuan Energy Technology Co., Ltd.) and 3 g of ferric oxide, dissolve in 50 mL of tetrahydrofuran solution, and stir magnetically for 3 h at 100 ° C. The solvent in the reaction system was evaporated to dryness to obtain a gray-black solid (porous basic carbon material precursor).

[0068] The gray-black solid was placed in a tube furnace (nitrogen atmosphere), and the heating rate...

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Abstract

The invention discloses a calcium oxide-loaded porous alkaline carbon material with a magnetic property as well as a preparation method and application of the of calcium oxide-loaded porous alkaline carbon material, and belongs to the technical field of preparation of porous carbon materials. The calcium oxide-loaded porous alkaline carbon material with the magnetic property is prepared from solid waste gypsum, an asphalt-based carbon source and an iron-based catalyst, has the characteristics of large specific surface area, stable performance and the like, and can be used for preparing biodiesel. In addition, the calcium oxide-loaded porous alkaline carbon material with the magnetic property is easy to recycle, biodiesel prepared through catalysis is high in yield, high activity is shown, commercial application is easy to achieve, and good application value is achieved.

Description

technical field [0001] The invention belongs to the technical field of carbon material preparation, and in particular relates to a calcium oxide-loaded magnetic porous basic carbon material, its preparation method and application. Background technique [0002] In recent years, the contradiction between resource shortage and environmental pollution faced by my country's economic development has become increasingly serious. The discharge of a large amount of industrial by-product gypsum (solid waste gypsum) has caused a huge impact on the ecological environment of our country, and this impact is becoming more and more serious with the increase of its discharge. The sources of industrial by-product gypsum are abundant, such as industrial solid waste discharged from flue gas desulfurization or neutralizing acidic wastewater in the process of industrial production (the main component is calcium sulfate dihydrate CaSO 4 2H 2 O), concentrated sulfuric acid and fluorite (CaF 2 ) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/02B01J23/78B01J35/00B01J35/04B01J35/10B01J37/08C10L1/02C11C3/04
CPCB01J23/02B01J23/78B01J35/0033B01J35/04B01J35/10B01J37/084B01J37/082C11C3/04C10L1/02Y02E50/10
Inventor 丁永玲孙华东庞来学田晓峰管秦禾
Owner SHANDONG JIAOTONG UNIV
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