In this study, catalytic pyrolysis of chilli stem (CS) were investigated in a fixed-bed reactor under N₂ environment at reaction temperature of 350–500 °C in the presence of Ni–Ca/SiO₂ catalyst systems. Ni–Ca/SiO₂ catalysts were synthesized, characterized and evaluated for the oxygen transfer. The catalytic pyrolysis of biomass with catalysts (Ni/SiO₂, Ca/SiO₂, Ni–Ca/SiO₂) was studied to identify the selective deoxygenation. Maximum bio-oil yield (45.2 wt%) was found with the Ni–Ca/SiO₂ catalyst compared to the non-catalytic (34.8 wt%) and other catalytic reaction (35.6, 37.4 and 35.1 wt% for SiO₂, Ca/SiO₂ and Ni/SiO₂ catalysts). With the addition of Ni/SiO₂ and Ni–Ca/SiO₂ catalyst, the oxygen was significantly removed in the form of CO₂. In addition, the carbon and hydrogen content with Ni–Ca/SiO₂ catalyst was higher than that of raw biomass. It also effectively improved the phenolics compounds in bio-oil with the addition of Ni–Ca/SiO₂ catalyst during the pyrolysis process. It was found that the addition of Ca remarkable promoted the catalytic activity of Ni catalyst. It can be seen high catalytic activity and deoxygenation in Ni–Ca/SiO₂ catalyst systems.

在这项研究中，在Ni-Ca / SiO ₂催化剂体系存在下，在N ₂环境下，在350-500°C的反应温度下，在固定床反应器中研究了辣椒茎（C​​S）的催化热解。合成了Ni-Ca / SiO ₂催化剂，表征并评估了氧的转移。研究了催化剂（Ni / SiO ₂，Ca / SiO ₂，Ni–Ca / SiO ₂）对生物质的催化热解，以鉴定选择性脱氧。与非催化（34.8 wt％）和其他催化反应（SiO ₂，Ca / 3 / 35.6、37.4和35.1 wt％）相比，Ni-Ca / SiO ₂催化剂具有最大的生物油产率（45.2 wt％）。二氧化硅₂和Ni / SiO ₂催化剂）。通过添加Ni / SiO ₂和Ni-Ca / SiO ₂催化剂，氧以CO ₂的形式被显着去除。此外，Ni-Ca / SiO ₂催化剂的碳和氢含量高于原始生物质。通过在热解过程中添加Ni–Ca / SiO ₂催化剂，还可以有效地改善生物油中的酚类化合物。发现Ca的添加显着促进了Ni催化剂的催化活性。可以看出，Ni-Ca / SiO ₂催化剂体系具有很高的催化活性和脱氧性。