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Fly ash loaded metal oxide catalyst and preparation method thereof
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A technology for loading metals and fly ash, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve problems such as pollution and waste, and reduce manufacturing costs , improve productivity, and expand the effect of comprehensive utilization
Inactive Publication Date: 2018-09-21
QINZHOU UNIV
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Problems solved by technology
[0004] Fly ash has long been regarded as solid waste and has not been well utilized, resulting in serious waste and pollution
Method used
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[0030] (1) According to the mass ratio magnesium salt: fly ash=0.01:1, take 0.53g magnesium salt and 5g fly ash carrier to prepare by equal volume impregnation method, and mark the corresponding name and number;
[0031] (2) The above-mentioned prepared samples were left to stand overnight at room temperature (generally, the time should be greater than eight hours), the purpose is to allow the metal salt to fully contact with the fly ash, and the loading effect is better;
[0032] (3) Put the above-mentioned sample that has been left still in a drying oven at 110°C for 6 hours to dry for 6 hours, the purpose is to remove moisture, volatile components and other components in the sample, and prepare for subsequent roasting;
[0033] (4) Put the above-mentioned dried sample into a muffle furnace with programmed temperature control and roast it at a temperature of 500° C. to form the catalyst;
[0034] (5) Pack and seal the above-mentioned pr...
Embodiment 2
[0036] Single-loaded molybdenum-containing oxide, the method is the same as in Example 1.
Embodiment 3
[0038] Double-loaded oxides containing metal magnesium-molybdenum, the method is the same as in Example 1.
[0039] 1 embodiment The specific experimental data are shown in the table below:
[0040] Preparation of fly ash supported catalyst related experimental data table
[0041]
[0042]
[0043] 2. Experimental results and analysis
[0044] 2.1 Characterization of physical properties
[0045] 2.1.1 Same composition, different temperature conditions
[0046] The previously prepared fly ash-supported metal oxide series catalysts were studied by powder X-raydiffraction (XRD). The test adopted a Cu target, slit DS=1°, RS=8mm, tube voltage: 40KV, tube current: 40mA ( Corresponding to LynxExe array detector), reading: every pass 0.02deg, 2θ range: 0-80°.
[0047] figure 1 It is the XRD pattern of the fly ash single-loaded magnesium oxide catalyst (under different calcination temperature conditions), and the a1 curve in the figure is the XRD pattern of the fly ash. Th...
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Abstract
The invention discloses a fly ash loaded metaloxide catalyst and a preparation method thereof. The preparation method comprises the following steps: 1), impregnating according to an equal volume forpreparing: impregnating fly ash and metal salt according to the equal volume; 2), standing overnight: standing a sample prepared in the former step overnight at a room temperature; 3), drying: dryingthe sample obtained after standing in the former step; 4), roasting and moulding: roasting and moulding the sample dried in the former step to obtain the catalyst. By the preparation method, the technological content and the added value of a fly ash product are increased, the way of comprehensive utilization of fly ash resources is expanded, an inexpensive raw material is found for a catalyst carrier, the productivity is increased and the production cost is lowered.
Description
technical field [0001] The invention belongs to the technical field of catalysts, in particular to a fly ash supported metaloxide catalyst and a preparation method thereof. Background technique [0002] Solid waste, mainly household or household waste. These wastes can be in solid or semi-solid form. Solid waste generally does not include industrial or hazardous waste. Advances in material science and rapid industrialization and urbanization have resulted in a large amount of solid waste. According to the "Global Waste Management Outlook" reported by the United Nations Environment Program (UNEP) and the International Solid Waste Association, the global "urban" waste production is estimated to be about 7-10 billion tons per year, and the amount per capita has increased significantly in the past 50 years. improve. With the improvement of global living standards and rapid urbanization in China, municipal solid waste (MSW) disposal has become a ubiquitous environmental prob...
Claims
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