Deep oxidative/adsorptive desulfurization of model diesel oil by DBD/FeCl3–SiO2
Deep oxidative/adsorptive desulfurization of model diesel oil by DBD/FeCl3–SiO2
复制标题
DBD/FeCl3·SiO2对模型柴油深度氧化/吸附脱硫
DOI：
10.1016/j.cattod.2013.04.007
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发表时间：
2013-08
期刊：
影响因子：
5.3
通讯作者：
Dai, Bin
中科院分区：
文献类型：
--
作者：
Ban, Lili;Liu, Ping;Ma, Cunhua;Dai, Bin
研究了以空气为氧源的介质阻挡放电(DBD)等离子体氧化/吸附脱除模型柴油中的硫化物。该体系以FeCl3-SiO2为催化剂和吸附剂，在常温下表现出良好的脱硫效果。在最佳反应条件下(空气流量(υ)为90ml/m in，DBD电压幅值为30kv，输入频率(F)为600 Hz，催化剂用量(ω)为3wt%，反应时间(T)为30min)，模型油中硫含量可从200ppm降至3ppm(S脱硫率达98.4%)。结果表明，DBD/FeCl3-SiO2比单独使用DBD、FeCl3和SiO2具有更好的脱硫能力。在上述条件下，苯并噻吩硫醚和4，6-二甲基二苯并噻吩硫醚的脱硫率分别可达94.8%和92.7%，且S类化合物的脱硫率顺序为DBT>>BT>>4，6-DMDBT。
Oxidative/adsorptive desulfurization of model diesel oil by a dielectric barrier discharge (DBD) plasma in the presence of air as oxygen resource was studied. This new system exhibited excellent desulfurization effect at room temperature when FeCl3–SiO2is used as catalyst and adsorbent. The sulfur content of DBT in model oil can be decreased from 200ppm to 3ppm (S-removal rate up to 98.4%) under optimum reaction conditions (air flow rate (υ), 90ml/min; amplitude of applied voltage (U) on DBD, 30kV; input frequency (f), 600Hz; catalyst amount (ω), 3wt%; the reaction time (t), 30min). It is obvious that the DBD/FeCl3–SiO2had better desulfurization ability than the DBD, FeCl3, and SiO2were used alone. Moreover, the good desulfurization rate of BT (benzothiophene) and 4,6-DMDBT (4,6-dimethyl-dibenzothiophene) could reach 94.8% and 92.7% under the above conditions, and the sulfur removal selectivity for S-compounds followed the order of DBT>BT>4,6-DMDBT.
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