Producing hydrogen from catalytic gasification of biomass represents an interesting process to facilitate the development of hydrogen economy. However, the design of catalyst is a key challenge for this technology. In this work, cost-effective Ca added Ni-based catalysts were developed and studied for producing hydrogen with a fixed-bed reactor. The relationship between Ca addition and the performance of catalyst in terms of the yield of hydrogen and catalyst deactivation (metal sintering and coke formation) was studied. The results showed that hydrogen production was largely enhanced when Ca was added, as the yield of hydrogen was enhanced from 10.4 to 18.2 mmol g⁻¹ sample in the presence of Ca-based catalyst. However, the yield and concentration of hydrogen were kept at similar levels with the increase of Ca. By normalizing the yield of hydrogen in relation to the amount of Ni presented inside the catalyst, the hydrogen yield per mole of nickel was increased from 50 g Ni ⁻¹(0.1Ca catalyst) to 80 g Ni⁻¹ (0.8Ca catalyst) when the Ca addition was increased from 10 mol% to 80 mol%. TPO-FTIR analysis of the experimented catalysts showed that 0.5 Ca catalyst had the highest amount of coke formation, in particular, most of the deposited carbons were amorphous which could deactivate the catalyst seriously. It is therefore concluded that the addition of cost-effective Ca could enhance the yield of hydrogen from biomass gasification. However, the concentration of Ca in the catalyst needs to be controlled to mitigate the generation of coke on the used catalyst.

从生物质的催化气化生产氢代表了促进氢经济发展的有趣过程。然而，催化剂的设计是该技术的关键挑战。在这项工作中，开发了具有成本效益的添加Ca的Ni基催化剂，并研究了用固定床反应器生产氢气的方法。研究了Ca的添加与催化剂性能之间的关系（就氢的收率和催化剂的失活（金属烧结和焦炭形成）而言）。结果表明，当添加Ca时，氢的产生大大增加，因为氢的产率从10.4mmol g ^-1增加到18.2mmol g ^-1。样品在钙基催化剂的存在下。然而，随着Ca的增加，氢的产率和浓度保持在相似的水平。通过相对于催化剂内部存在的Ni量标准化氢的产率，每摩尔镍的氢产率从50 g Ni ^-1（0.1Ca催化剂）增加到80 g Ni ^-1当Ca添加量从10mol％增加到80mol％时（0.8Ca催化剂）。TPO-FTIR对实验催化剂的分析表明，0.5 Ca催化剂具有最高的焦炭生成量，特别是，大多数沉积碳是非晶态的，会严重使催化剂失活。因此得出的结论是，添加具有成本效益的Ca可以提高生物质气化过程中氢气的产率。然而，需要控制催化剂中Ca的浓度以减轻用过的催化剂上焦炭的产生。