High-dispersion nickel-based catalyst, preparation method thereof and application of high-dispersion nickel-based catalyst in methane carbon dioxide reforming

• Main Authors: YOU HAOSHENG, BAO XINHE, PAN XIULIAN, YU YONGQI, FANG GUANGZONG
• Format: Patent
• Language: Chinese; English
• Published: 24.05.2024
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention belongs to the technical field of Ni metal element catalyst preparation, and particularly relates to a high-dispersion nickel-based catalyst, a preparation method thereof and application of the high-dispersion nickel-based catalyst in methane carbon dioxide reforming. The catalyst comprises a metal oxide carrier and an active center Ni, wherein the concentration of the active center Ni is 0.01-15 wt.%; the active center Ni is in a state of being dispersed in the carrier, and the dispersity is 70-100%; the particle size of the active center Ni is not greater than 2nm. The catalyst prepared by the method has excellent stability and carbon deposition resistance, the preparation process is simple, the repeatability is good, the dispersity of the active center of the catalyst is high, the methane conversion rate is 60-99%, the carbon dioxide conversion rate is 50-99%, and the H2/CO ratio in the produced synthesis gas is 0.8-1.2. 本发明属于Ni金属元素催化剂制备技术领域，具体涉及一种高分散镍基催化剂及其制备方法和在甲烷二氧化碳重整中的应用。所述催化剂包括金属氧化物载体和活