The thermocatalytic alteration of CH₄ into highly pure hydrogen and filaments of carbon was investigated on a series of Ni-catalysts with various contents (25, 40, 55, and 70 wt%) supported mesoporous spherical SiO₂. The silica with ordered structure and high specific surface area (1136 m²/g) was synthesized using the Stöber technique with TEOS as a silica precursor and CTAB as the template in a simple synthesis system of aqueous-phase. This technique led to the preparation of mesoporous spherical silica. The prepared samples were characterized using BET, TPR, XRD, TPO, and SEM analyses. The prepared catalysts with different nickel loading showed the BET surface area ranging from 225.0 to 725.7 m²/g. These results indicated that an increase in nickel content decreases the surface area and leads to a subsequent collapse of a pore structure. SEM analysis confirmed a spherical nanostructure of catalysts and revealed that with the increase in loading of Ni, the particle size enlarged, because of the agglomeration of the particles. The results implied that the high methane conversion of 54% obtained over the 55 wt% Ni/SiO₂ at 575 °C and this sample had higher stability at lower reaction temperature than the other prepared catalysts, slowly deactivation was observed for this catalyst at a period of 300 min of time on stream.

在一系列不同含量（25、40、55和70 wt％）负载的介孔球形SiO ₂的Ni催化剂上，研究了CH ₄向高纯氢和碳丝的热催化转化。在简单的水相合成系统中，采用Stöber技术，以TEOS为二氧化硅前体，以CTAB为模板，合成了具有规则结构和高比表面积（1136 m ² / g）的二氧化硅。该技术导致了介孔球形二氧化硅的制备。使用BET，TPR，XRD，TPO和SEM分析对制备的样品进行表征。制备的镍负载量不同的催化剂的BET表面积为225.0至725.7 m ²/G。这些结果表明镍含量的增加降低了表面积并导致随后的孔结构塌陷。SEM分析证实了催化剂的球形纳米结构，并揭示了随着Ni负载量的增加，由于颗粒的团聚，粒径增大。结果表明，在575°C下，55％（重量）的Ni / SiO ₂上获得了54％的高甲烷转化率，并且该样品在较低的反应温度下具有更高的稳定性，与其他制备的催化剂相比，该催化剂缓慢失活。时间为300分钟。