活性炭为载体的Ni催化剂的开发用于增强甲苯蒸汽重整,International Journal of Energy Research

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活性炭为载体的Ni催化剂的开发用于增强甲苯蒸汽重整
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-03-16 , DOI: 10.1002/er.5335
Cui Quan ₁ , Huihui Wang ₁ , Ningbo Gao ₁

Affiliation

焦油的催化蒸汽重整被认为是现代世界中焦油去除和H ₂产生的有吸引力的途径。在这项研究中，进行了松木热解过程中生物炭（B）的活化，以提高其比表面积和孔结构。活化的生物炭（AB）用作催化剂载体，目的是增强催化活性。研究了甲苯在Ni / AB催化剂上的催化重整性能，并与Ni / Al ₂ O _{3进行了比较。}和镍/硼。研究了氢氧化钾（KOH）与生物炭比，镍载量，重整温度，重时空速和水蒸气碳比（S / C）对Ni / AB催化剂性能的影响。结果表明，Ni / AB催化剂对Ni / B和Ni / Al ₂ O ₃催化剂的碳转化和H ₂生成表现出优异的催化活性。另外，在最佳操作条件下，使用Ni / AB催化剂可实现高碳转化率（86.2％）和H ₂产生（64.3％）。此外，为了提高Ni / AB催化剂的稳定性，将Ce引入Ni / AB催化剂中。根据稳定性测试，H ₂ 即使20小时后，Ni-Ce / AB催化剂的浓度仍高于2.24 mmol / min。

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Development of activated biochar supported Ni catalyst for enhancing toluene steam reforming

Catalytic steam reforming of tar is considered to be an attractive pathway for tar removal and H₂ production in the modern world. In this study, activation of biochar (B) from pine wood pyrolysis was performed to boost its specific surface area and pore structure. The activated biochar (AB) was used as a catalyst support with the aim to enhance the catalytic activity. The catalytic reforming performance of toluene over Ni/AB catalyst was investigated, and the catalytic behavior of Ni/AB catalysts was compared with Ni/Al₂O₃ and Ni/B. The effect of potassium hydroxide (KOH) to biochar ratio, Ni loading, reforming temperature, weight hourly space velocity and steam to carbon ratio(S/C) on the performance of Ni/AB catalysts were studied. The results showed that Ni/AB catalysts exhibited a superior catalytic activity for carbon conversion and H₂ production to Ni/B and Ni/Al₂O₃ catalysts. In addition, high carbon conversion (86.2%) and H₂ production (64.3%) can be achieved with Ni/AB catalyst under the optimal operating conditions. Furthermore, in order to improve the stability of the Ni/AB catalyst, Ce was introduced to Ni/AB catalyst. According to stability tests, the H₂ concentration of Ni‐Ce/AB catalysts was still higher than 2.24 mmol/min even after 20 hours reaction.

更新日期：2020-03-16

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