Sulfur transfer catalyst and preparation method thereof
A catalyst and sulfur transfer technology, applied in chemical instruments and methods, physical/chemical process catalysts, heterogeneous catalyst chemical elements, etc., can solve the problem of low utilization rate of active component cerium oxide, and achieve improved distribution and uniform distribution , the effect of improving the utilization rate
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[0046] At the same time, the present invention also provides a preparation method of a sulfur transfer catalyst, the preparation method comprising: compound containing alkaline earth metal, optional clay, pseudo-boehmite, magnesium aluminum sol, compound containing rare earth element , and an optional transition metal-containing compound are mixed and stirred to form a colloid, and spray-dried to form a spinel composition; and optionally include impregnating the spinel composition in a solution of a compound containing an additional metal component In; the compound of the additional metal component includes a compound containing a rare earth element, and an optional compound containing a transition metal;
[0047] Wherein, the alkaline earth metal contains at least magnesium, the rare earth element contains at least cerium, and the transition metal is one selected from Ti, V, Fe, Co, Ni, Cu, Zr, Mn, Mo and W or several; the molar ratio of Mg:Al in the magnesium-aluminum sol is...
preparation example
[0109] For illustrating the aluminum sol adopted in the present invention, magnesium aluminum sol and preparation method thereof:
[0110] The test items and test methods involved in the following preparation examples are described as follows:
[0111] The free chloride ion content of the aluminum sol is determined by the method of sedimentation, and the pH value of the aluminum sol is adjusted to 5-6 with ammonia water. The aluminum sol has flocculent precipitation, and the precipitate is separated, and the chloride ion content of the supernatant is measured.
[0112] The density of the aluminum sol was measured by a glass densitometer (Shenzhen Dingxinyi Experimental Equipment Co., Ltd.).
[0113] The viscosity of the aluminum sol was measured by a rotational viscometer (Shanghai Hengping Scientific Instrument Co., Ltd., NDJ-1 rotational viscometer).
[0114] The content of elements in the aluminum sol is measured by XRF fluorescence analysis method (RIPP 117-90 standard me...
preparation example 1
[0126] This preparation example illustrates the preparation method of the aluminum sol of the present invention.
[0127] (1) Carry out the first contact with 1mol metal aluminum (China Aluminum Corporation) and 1mol (HCl) hydrochloric acid, control the temperature of the first contact process to be 50°C, the first contact time is 3h, and the initial concentration of hydrochloric acid used is 32% by weight ;
[0128] (2) The mixture after the first contact was left at room temperature at 20°C for 6 hours, and then mixed with γ-Al 2 o 3 (Shandong Aluminum Plant) and η-Al 2 o 3 (Shandong Aluminum Works) carries out the second contact, the second contact temperature is 30 ℃, the second contact time is 4h, the gamma-Al calculated as aluminum 2 o 3 , η-Al in aluminum 2 o 3 The molar ratio to the metal aluminum in step (1) is 0.05:0.05:1. The physical and chemical properties of aluminum sol are listed in Table 1.
[0129] aluminum sol 27 Al NMR determination, spectrogram s...
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