Liquefied petroleum gas production catalyst and process for producing liquefied petroleum gas using this catalyst
A technology of liquefied petroleum gas and manufacturing method, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. The effect of slow activity, good selectivity and high hydrogenation capacity
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Embodiment 1
[0207] (manufacture of catalyst)
[0208] As the methanol synthesis catalyst component, a Zn-Cr-based methanol synthesis catalyst supported with 1% (wt) of Pd (also referred to as "Pd / Zn-Cr") prepared in the following manner was prepared by mechanical pulverization. Composition of the powder (average particle diameter: 0.7 μm).
[0209] As the Zn—Cr-based methanol synthesis catalyst, commercial product KMA (average particle diameter: about 1 mm) manufactured by Zudo Chemical Catalyst Co., Ltd. was used. The composition of this Zn-Cr based methanol synthesis catalyst is Zn / Cr=2 (atomic ratio).
[0210] First, in 4.4ml Pd(NH 3 ) 2 (NO 3 ) 2 1 ml of ion-exchanged water was added to an aqueous solution (Pd content: 4.558% (wt)) to prepare a Pd-containing solution. 20 g of a Zn-Cr based methanol synthesis catalyst was thrown into the prepared Pd-containing solution, and the Pd-containing solution was immersed. Then, the Zn-Cr-based methanol synthesis catalyst impregnated wit...
Embodiment 2
[0218] (manufacture of catalyst)
[0219] The process of mechanically pulverizing the methanol synthesis catalyst component and the zeolite catalyst component into powder is eliminated, and they are shaped into pellets with an average particle diameter of 1 mm, and then mixed together. The same method as in Example 1 was used to obtain the catalyst.
[0220] (Manufacture of LPG)
[0221] Using the prepared catalyst, the same LPG synthesis reaction as in Example 1 was carried out. Analysis of the products by gas chromatography revealed that 3 hours after the start of the reaction, the conversion rate of carbon monoxide was 86.1%, the conversion rate of the shift reaction from carbon monoxide to carbon dioxide was 33.4%, and the conversion rate to hydrocarbons was 52.7%. In addition, 81.8% of the produced hydrocarbon gas was propane and butane on a carbon basis, and 57.5% of the propane and butane were propane and 42.5% on a carbon basis. Furthermore, 5 hours after the start ...
Embodiment 3
[0242] (manufacture of catalyst)
[0243] As the methanol synthesis catalyst component, a Zn-Cr-based methanol synthesis catalyst (manufactured by Zudo Chemical Catalyst Co., Ltd., trade name: KMA) was used, in which 0.5% (wt) of Pd was supported. The same method as Comparative Example 2 was used to obtain the catalyst.
[0244] (Manufacture of LPG)
[0245] Using the prepared catalyst, the same LPG synthesis reaction as in Comparative Example 2 was performed. The product was analyzed by gas chromatography. As a result, 3 hours after the start of the reaction, the conversion rate of carbon monoxide was 33.9%, the conversion rate of the shift reaction from carbon monoxide to carbon dioxide was 13.3%, and the conversion rate to hydrocarbon was 20.6%. In addition, 80.2% of the produced hydrocarbon gas was propane and butane on a carbon basis, and 60.2% of the propane and butane were propane and 39.8% on a carbon basis.
[0246] The results are shown in Table 2.
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