SiC supported catalyst for preparing low-carbon mixed alcohol by utilizing synthesis gas, preparation method and application

A SiC supported catalyst for preparing low-carbon mixed alcohol by utilizing synthesis gas comprises, by weight percentage, 30-50% of SiC, 20-30% of Cu, 10-20% of Fe, 5-15% of Mn, 5-10% of Zn, 5-15% of Zr, 1-4% of Co and 0.1-5% of M, wherein M is one of alkali metals or alkaline earth metals, wherein alkali metals are Na, K, Li or Cs; and the alkaline earth metals are Mg or Ba. The SiC supported catalyst has the advantages of being good in stability, low in cost, long in service life and high in selectivity on mild reaction conditions.