Abstract Sustainable hydrogen production can be realized by steam reforming ethanol (SRE) derived from renewable biomass, but develop high-efficiency and sixpenny catalyst is a major challenge. Attapulgite-supported nickel catalyst (Ni/ATP) exhibits promising potential for SRE for hydrogen production. The influence of calcination temperature (CT) on the microscopic morphology and physicochemical properties of Ni/ATP was investigated by various technologies. The results revealed that increasing CT could improve metal-support interaction (MSI) and surface Ni active species content. However, extortionate CT (>700 °C) significantly led to catalyst structure collapse and crystal phase transfer accompanied with the formation of new species, which enhanced the MSI and reduced the surface Nio species content. The outcomes of SRE experiments demonstrated that Ni/ATP-C600 presented maximal activity and H2 yield due to its higher surface contents of the Nio active component and Ni/ATP-C900 exhibited unique stability owing to its stronger MSI. Hence, the coordination between active species distribution and MSI in Ni/ATP can be adjusted by CT. Additionally coke deposits on spent Ni/ATP-C300 were identified with quite aromatic species, which strongly attract to the surface of catalyst and encapsulate active site, while that on used Ni/ATP-C900 had higher degrees of graphitization, but did not affect the stability.

中文翻译：

---

Ni/凹凸棒石煅烧温度对乙醇蒸汽重整制氢的影响

摘要 可再生生物质乙醇（SRE）蒸汽重整可实现可持续制氢，但开发高效六便士催化剂是一项重大挑战。凹凸棒石负载的镍催化剂（Ni/ATP）在 SRE 制氢方面具有广阔的潜力。通过各种技术研究了煅烧温度 (CT) 对 Ni/ATP 微观形貌和理化性质的影响。结果表明，增加 CT 可以改善金属-载体相互作用 (MSI) 和表面 Ni 活性物质含量。然而，敲诈CT（> 700°C）显着导致催化剂结构崩溃和晶相转移，伴随着新物种的形成，这增强了MSI并降低了表面Nio物种含量。SRE 实验的结果表明，Ni/ATP-C600 由于其 Nio 活性成分的更高表面含量而表现出最大的活性和 H2 产量，而 Ni/ATP-C900 由于其更强的 MSI 而表现出独特的稳定性。因此，可以通过 CT 调整 Ni/ATP 中活性物种分布和 MSI 之间的协调。此外，用过的 Ni/ATP-C300 上的焦炭沉积物被鉴定为具有相当芳香的物质，它们强烈地吸引到催化剂表面并包裹活性位点，而使用过的 Ni/ATP-C900 上的焦炭具有较高的石墨化程度，但不影响催化剂稳定。活性物质分布与 Ni/ATP 中 MSI 之间的协调可以通过 CT 进行调整。此外，用过的 Ni/ATP-C300 上的焦炭沉积物被鉴定为具有相当芳香的物质，它们强烈地吸引到催化剂表面并包裹活性位点，而使用过的 Ni/ATP-C900 上的焦炭具有较高的石墨化程度，但不影响催化剂稳定。活性物质分布与 Ni/ATP 中 MSI 之间的协调可以通过 CT 进行调整。此外，用过的 Ni/ATP-C300 上的焦炭沉积物被鉴定为具有相当芳香的物质，它们强烈地吸引到催化剂表面并包裹活性位点，而使用过的 Ni/ATP-C900 上的焦炭具有较高的石墨化程度，但不影响催化剂稳定。