A series of ordered mesoporous nickel alumina catalysts were synthesized via the evaporation induced self-assembly technique (EISA). Varying synthesis parameters such as the type of acid, nickel loading, calcination temperature as well as synthesis method influenced the catalyst morphology and its activity towards CO₂ methanation. Catalyst prepared without acid formed macroporous structures with a very low surface area (47 m² g⁻¹), whereas using a mixture of hydrochloric and citric acid resulted in incomplete formation of mesoporous micelles with surface area of 173 m² g⁻¹. On the other hand, using nitric acid lead to complete formation of long cylindrical micelles with a combined surface areas up to 260 m² g⁻¹ and highly dispersed nickel clusters with a size of 3–5 nm. An optimum calcination temperature of 700 °C was determined yielding the highest CO₂ conversion and CH₄ selectivity. This catalyst displayed a stable performance and did not exhibit any sign of deactivation during a 150 h test. Catalysts calcined at lower and higher temperatures had smaller surface areas as well as lower catalytic activity.

通过蒸发诱导自组装技术（EISA）合成了一系列有序介孔镍铝催化剂。各种合成参数，例如酸的类型，镍的负载量，煅烧温度以及合成方法等，都会影响催化剂的形态及其对CO ₂甲烷化的活性。没有酸制备的催化剂形成具有非常低的表面积（47m ²  g ^-1）的大孔结构，而使用盐酸和柠檬酸的混合物导致具有173m ²  g ^-1表面积的中孔胶束的不完全形成。另一方面，使用硝酸导致完整的长圆柱形胶束的形成，其总表面积高达260 m²  g ^-1和高度分散的镍簇，尺寸为3-5 nm。确定了700℃的最佳煅烧温度，以产生最高的CO ₂转化率和CH ₄选择性。该催化剂表现出稳定的性能，并且在150小时的测试过程中没有任何失活迹象。在较低和较高温度下煅烧的催化剂具有较小的表面积以及较低的催化活性。