Complex nano-catalyst for preparing synthesis gas by reforming methane and carbon dioxide, and preparation method thereof

• Main Authors: XUE HONGXIA, QI HUANDONG, BAI ZHIMIN, YU HANTAO, JIANG JIANBO, ZHAO QINGLU, LIANG WEIZHONG, JIANG XIULING, WANG HAO
• Format: Patent
• Language: English
• Published: 29.04.2015
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; COMPOUNDS THEREOF; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention belongs to the field of catalyst preparation, and particularly relates to a complex nano-catalyst for preparing synthesis gas by reforming methane and carbon dioxide, and a preparation method thereof. The complex nano-catalyst comprises an active ingredient, an accessory ingredient and a complex carrier, wherein the active ingredient is composed of cobalt oxide and nickel oxide; the accessory ingredient is composed of one or more of potassium oxide, magnesium oxide or lanthanum oxide; the complex carrier is composed of two of nano aluminium oxide, nano zirconium oxide or nano silicon oxide. The preparation method comprises the following steps: preparing a mixed solution; preparing the complex nano-catalyst. The complex nano-catalyst is small in particle diameter of the complex carrier, has high surface energy and surface defects, increases catalyst active sites, activates carbon dioxide to generate active oxygen, assists carbon elimination, reduces the yield of carbon, slightly improves stability of the complex nano-catalyst, and prolongs the use period of the complex nano-catalyst; the preparation method is simple, scientific and reasonable.