School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
Bioresour Technol. 2017 Nov;243:1-8. doi: 10.1016/j.biortech.2017.06.072. Epub 2017 Jun 16.
Conversion of Gracilaria gracilis (G. gracilis) into bio-products was carried out via pyrolysis at different temperatures to determine its potential for phenol-rich bio-oil. Co-Mo supported on zeolites (HZSM-5), mesoporous (HMS) catalysts and their composites (ZH) were investigated and compared to each other on catalytic pyrolysis processes. In non-catalytic tests, the maximum weight percentage of bio-oil was 42wt% at 500°C and had the maximum amount of phenol (6.28wt%). in the catalytic tests by ZH composites; the addition of zeolite content in the structure of composites significantly decreased total concentrations of acetic acid and formic acid from 9.56 to 8.12wt% and slightly decreased phenol and furfural concentrations from 6.65 and 6.98 to 5.88 and 5.49wt%, respectively. Furthermore, the best selectivity for hydrogen yield (6.08mmol/g macroalgae) and lowest amount of acetic acid (5.4wt%) was observed for CoMo/ZH-20 catalyst, that is synthesized by 20wt% of zeolite.
将江蓠（G. gracilis）转化为生物制品是通过在不同温度下进行热解来实现的，以确定其用于富含苯酚的生物油的潜力。研究了负载在沸石（HZSM-5）、中孔（HMS）催化剂及其复合材料（ZH）上的 Co-Mo，并将其在催化热解过程中进行了比较。在非催化试验中，在 500°C 时生物油的最大重量百分比为 42wt%，苯酚含量最高（6.28wt%）。在 ZH 复合材料的催化试验中；复合材料结构中沸石含量的增加，显著降低了乙酸和甲酸的总浓度，从 9.56wt%降低到 8.12wt%，并略微降低了苯酚和糠醛的浓度，从 6.65wt%和 6.98wt%降低到 5.88wt%和 5.49wt%。此外，对于 CoMo/ZH-20 催化剂（通过 20wt%的沸石合成），观察到氢气产率（6.08mmol/g 海藻）的最佳选择性和最低的乙酸含量（5.4wt%）。
