Ni-CeO_2/SBA-15电催化甲苯水蒸气重整的实验研究

Electric Current Enhanced Catalytic Steam Reforming of Toluene with Ni-CeO_2/SBA-15 Catalyst

以甲苯为生物质气化焦油的模型化合物,以Ni-Ce O2/SBA-15为催化剂,在自行搭建的固定床电化学催化(电催化)水蒸气重整实验台上进行了甲苯的电催化水蒸气重整实验,考察了电流强度、反应温度和水/碳摩尔比(S/C)对甲苯转化率、产气组成的影响,并对该催化剂进行了长时间活性测试。结果表明,电流的引入可以显著提高催化剂对甲苯的转化效率;在电流为4 A、反应温度为800℃、S/C为3时,甲苯转化率可以达到94.7%。

Electric current enhanced catalytic steam reforming of toluene, which was selected as the model compound ofbiomass gasification tar, was performed by a fixed-bed electrochemical catalytic steam reforming experimental set usingthe Ni-CeO2/SBA-15 catalyst. Experiments were performed to reveal the effects of several factors on the tolueneconversion and product gas composition, including the electric current intensity, reaction temperature and steam/carbon（S/C） ratio. Moreover, stability test of the catalyst was conducted over a long experimental period. The results indicatedthat the presence of the electric current enhanced the catalytic activity remarkably. The toluene conversion reached as highas 94.7% under the electric current of 4 A, temperature of 800 °C and S/C ratio of 3.