一种甲烷二氧化碳重整制合成气催化剂的制备方法是将褐煤活性炭与氨水按比例混合,密闭浸泡,获得改性褐煤活性炭;再将改性褐煤活性炭置于密闭的加压控温反应釜中,在一定温度和压力下进行水热反应,自然冷却干燥后制得氨水改性褐煤活性炭;最后将氨水改性褐煤活性炭与硝酸钴溶液在一 A method for preparing a methane carbon dioxide reforming syngas catalyst is that the lignite activated carbon is mixed with ammonia in a proportion and sealed to obtain a modified lignite activated carbon; the modified lignite activated carbon is placed in a sealed pressurized temperature-controlled reaction kettle, Under certain temperature and pressure for hydrothermal reaction, naturally cooled and dried to obtain ammonia-modified lignite activated carbon; and finally ammonia-modified lignite activated carbon and cobalt nitrate solution in a