Use of hollow zeolite doped with bimetallic or trimetallic particles for hydrocarbon reforming reactions
A bimetallic and trimetallic technology, applied in the field of catalysts, can solve the problems of adverse impacts on commercial application costs, expensive catalysts and rare metals, etc.
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Embodiment 1
[0068] (Synthesis of silicalite-1)
[0069] Silica-1 is prepared by mixing ethyl orthosilicate (TEOS, purity 98%, USA) and tetrapropylammonium hydroxide (TPA(OH), 1.0M in water, United States) and water. The gel composition is: SiO 2 : 0.4TPA(OH): 35H 2 O. Then, the mixture was transferred into a Teflon-lined autoclave and heated at 170 °C under static conditions for 3 days. The solid was recovered by centrifugation and washed with water, which was repeated 3 times. The resulting solid was dried overnight at 110°C and then calcined in air at 525°C for 12 hours.
Embodiment 2
[0071] (Synthesis of Ni / hollow-silicalite-1(HZ) comparative catalyst material)
[0072] With Ni(NO 3 ) 2 ·6H 2 O aqueous solution (USA ) impregnated the silicalite-1 of Example 1 to produce 1.8 wt% Ni or 5.5 wt% Ni on silicalite-1. The suspension was dried overnight in air at 50°C. Impregnated silicalite-1 (1 g) was suspended with aqueous TPA(OH) (4.15 in 3.33 mL of water). The mixture was transferred to a Teflon-lined autoclave and heated at 170° C. under static conditions for 24 hours. Finally, 1.8NiHZ was calcined in air at 450°C for 6 hours. Table 1 lists the composition of the samples.
Embodiment 3
[0074] (General Synthesis Method of Metal Hollow-Silicalite-1 Catalyst Material)
[0075] With Ni(NO 3 ) 2 ·6H 2 O (United States ) and Co(NO 3 ) 2 ·6H 2 O(Aldrich) or RuCl 3 ×H 2 An aqueous solution of O (Aldrich) impregnated the silicalite-1 of Example 1 to prepare 5.5% by weight NiM in a 50 / 50 molar ratio on silicalite-1. 2 (NiCo or NiRu). The suspension was dried overnight in air at 50°C. Impregnated silicalite-1 (1 g) was suspended with aqueous TPA(OH) (4.15 in 3.33 mL of water). The mixture was transferred to a Teflon-lined autoclave and heated at 170° C. under static conditions for 24 hours. Finally, NiCo / HZ was calcined at 450 °C in air for 6 hours. Table 1 lists the composition of the samples.
[0076] Table 1
[0077] Sample serial number
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