M/γ-Al2O3催化剂对煤油水重整制氢的影响

以γ-Al₂O₃为载体,采用等体积分步浸渍法制备了以Ni为活性组分,La、Ce、Fe、Cr、Co为助剂的催化剂M/γ-Al₂O₃,在固定床管式反应器中研究了M/γ-Al₂O₃催化剂的性能,考察了反应温度、水碳比和空速对氢产率的影响,并对催化剂进行XRD、SEM和BET表征。结果表明,NiLaCeFeCrCo/γ-Al₂O₃催化剂具有较好的催化性能,在反应温度700 ℃、水碳物质的量比10和空速6 min^-1的条件下,氢产率达到27.335 mol·mol^-1,并在300 min内表现出较好的活性,平均氢产率为21.966 mol·mol^-1。

Influence of M/γ-Al2O3 catalyst on water reforming of kerosene to hydrogen

Using Al₂O₃ as the carrier,Ni as the active component and La,Ce,Fe,Cr,Co as the additives,M/γ-Al₂O₃ catalyst was prepared by incipient wet and stepwise impregnation method.The performance of M/γ-Al₂O₃ catalyst,and the influence of reaction temperatures,water/carbon molar ratios,liquid space velocity on hydrogen yield were investigated in a fixed bed tubular reactor.The catalyst was characterized by means of XRD,SEM and BET techniques.The results indicated that NiLaCeFeCrCo/γ-Al₂O₃ catalyst had good catalytic performance,under the optimized reaction condition of reaction temperature 700 ℃,water/carbon molar ratio 10,liquid space velocity of kerosene 6 min^-1,the yield of hydrogen reached 27.335 mol per molar kerosene,and the catalyst exhibited better activity within 300 min,the average yield of hydrogen reached 21.966 mol per molar kerosene.