Biomass pyrolysis coupled with non-thermal plasma/catalysis for hydrogen production: Influence of biomass components and catalyst properties
Biomass pyrolysis coupled with non-thermal plasma/catalysis for hydrogen production: Influence of biomass components and catalyst properties
复制标题
DOI：
10.1016/j.jaap.2021.105325
复制
发表时间：
2021-09
影响因子：
6
通讯作者：
Ella Blanquet;P. Williams
中科院分区：
文献类型：
--
作者：
Ella Blanquet;P. Williams
开发了一种新型的两段热解-等离子体/催化工艺，用于废生物质制氢。考察了生物聚合物、纤维素和木质素的比较，添加镁、钴、铈、铜、铁、镍等助剂金属对Ni-Al_2O_3催化剂的助剂作用，以及催化剂载体材料对产氢的影响。与非等离子体热解催化相比，等离子体和催化相结合产生了最高的氢气和总产气量。与木质素相比，热解-等离子体/催化纤维素产生4.07mmolg−1生物量氢气，木质素产生4.29mmolg−1生物量氢气。添加金属助剂的Ni-Al_2O_3催化剂对产氢影响不大。然而，一些催化剂(Cu-Ni-Al_2O_3和Ni-Ni-Al_2O_3)的加入表明，金属助剂的加入导致氢产率降低。催化剂的氢产率(H_2mmolg−_1生物质)顺序为：Ce-Ni>；Co-Ni>；Mg-Ni>；Fe-Ni>；Ni-Ni>；此外，还考察了不同的催化剂载体材料。与氧化钛和Y沸石载体相比，氧化铝载体的氢产率最高。氢气的产生与催化剂材料的比表面积和孔隙率以及介电常数有关。
A novel two-stage pyrolysis-plasma/catalysis process has been developed for hydrogen production from waste biomass. Investigation into; the comparison of the biopolymers, cellulose and lignin; the effect of Mg, Co, Ce, Cu, Fe and Ni as promoter metals added to a Ni-Al2O3catalyst; and the influence of the catalyst support material in relation to hydrogen production was carried out. The combination of plasma and catalysis produced the highest hydrogen and total gas yield from processing waste biomass in comparison to non-plasma pyrolysis-catalysis. The pyrolysis-plasma/catalysis of cellulose produced 4.07 mmol g−1biomassof hydrogen compared with lignin which produced 4.29 mmol g−1biomassof hydrogen. Metal promoters with the Ni-alumina catalyst did not have a strong influence on hydrogen production. However, some catalysts (Cu-Ni-Al2O3and Ni-Ni-Al2O3), showed that addition of the metal promoter resulted in a reduced yield of hydrogen. The order of the catalysts in terms of hydrogen yield (H2mmol g−1biomass) was, Ce-Ni > Co-Ni > Mg-Ni > Fe-Ni > Ni-Ni > Cu-Ni. In addition, different catalyst support materials were investigated. Hydrogen yield was highest with alumina support material compared with titanium oxide and Y-zeolite supports. Hydrogen production was linked to the surface area and porosity, and the dielectric constant of the catalyst material.