Dry Reforming of Methane over 15wt.% Ni/CaO-Ca₁₂Al₁₄O₃₃ catalyst was performed in a microreactor in the temperature range 600−800°C under atmospheric pressure, at WHSV of 120 Lg⁻¹h⁻¹ and by time on stream of 12 h for producing synthesis gas. The novel catalyst was prepared by Ni wet impregnation of a mixed calcium-aluminum-oxide (CAO) ceramic support. Similarly, a Ni/γ-Al₂O₃ reference catalyst was prepared. Characterizations were conducted by TGA-FTIR, XRD, SEM-EDS, N₂ physisorption, H₂-TPR, CO₂-TPD, and CO₂-TPRn techniques. After calcination(500°C)/reduction(700°C) steps in situ formed CaO promoter was highly dispersed on Ca₁₂Al₁₄O₃₃ carrier, which induced strong basicity. A good anchorage of NiO on CAO support was evidenced by reduction peaks at 490°C and 650°C on the H₂-TPR profile. The reduced mesoporous catalyst presented high S_BET, large pores volume, and unimodal pore size distribution. High reactants conversions, good H₂ and CO selectivity, and H₂/CO molar ratio close to unity at 800°C were achieved. Although the catalytic activity of Ni/γ-Al₂O₃ reference catalyst was slightly better than that of Ni/CaO-Ca₁₂Al₁₄O₃₃ catalyst the stability was worse owing to the excessive carbon build-ups, whereas the novel catalyst displayed a very low carbon deposit on spent catalyst at 600 and 700°C, and negligible coke deposit at 800°C. It was established that the basicity of CaO-Ca₁₂Al₁₄O₃₃ support can play a key role in preventing coke deposition during DRM. The Ni CaO-Ca₁₂Al₁₄O₃₃ can serve as sorbent for CO₂ capture and simultaneously for its catalytic conversion in a valuable fuel.

在微型反应器中，在大气压力下，于600-800°C的温度范围内，在WHSV为120 Lg ^-1 h ^{-1的条件下}按时间对15％。Ni / CaO-Ca ₁₂ Al ₁₄ O ₃₃催化剂进行甲烷干重整。在12小时内用于生产合成气。通过镍湿法浸渍混合的钙铝氧化物（CAO）陶瓷载体制备了新型催化剂。类似地，由Ni /γ-Al系₂ ö ₃制备参考催化剂。通过TGA-FTIR，XRD，SEM-EDS，N ₂物理吸附，H ₂ -TPR，CO ₂ -TPD和CO _2进行表征-TPRn技术。在煅烧（500℃）/还原（700℃）步骤后，原位形成的CaO促进剂高度分散在Ca ₁₂ Al ₁₄ O ₃₃载体上，引起强碱性。通过在H ₂ -TPR曲线上的490°C和650°C的还原峰可以证明NiO在CAO载体上具有良好的锚固性。还原的中孔催化剂表现出高的S _BET，大的孔体积和单峰孔径分布。获得了高的反应物转化率，良好的H ₂和CO选择性以及在800℃下接近于1的H ₂ / CO摩尔比。虽然镍的催化活性/γ-Al系₂ ö ₃参比催化剂比Ni / CaO-Ca ₁₂ Al ₁₄ O ₃₃催化剂稍好，但由于积碳过多，稳定性较差，而新型催化剂在600和700°C时在废催化剂上的积碳非常低C，在800°C下可忽略不计的焦炭沉积。已经确定，CaO-Ca ₁₂ Al ₁₄ O ₃₃载体的碱性可以在防止DRM期间积炭的过程中发挥关键作用。Ni CaO-Ca ₁₂ Al ₁₄ O ₃₃可用作吸附剂，用于捕获CO ₂并同时用于其在有价值的燃料中的催化转化。