The invention provides
starch-based
nitrogen doped mesoporous molding carbon. A preparation method of the carbon comprises the following steps: mixing natural
starch with a template agent, adding water of a water absorption volume capacity equal to that of the mixture, uniformly stirring, performing
extrusion modeling, leaving to stand for a time, and
drying in an oven so as to obtain a
mesoporous carbon precursor; putting the obtained
mesoporous carbon precursor into a tubular furnace; in the presence of an
inert gas, heating to 400-1000 DEG C, and
roasting for 1-5 hours at a constant temperature so as to obtain a carbonized material; removing the template agent from the obtained carbonized material, washing till being neutral with deionized water, and
drying, so as to obtain a finished product. The
starch-based
nitrogen doped mesoporous molding carbon provided by the invention is simple in preparation process, low in ash range and
impurity content, free of extract
nitrogen source, rich in pore, high in mesoporous structure ratio, adjustable in aperture and excellent in
catalysis property in reaction for preparing
vinyl chloride monomers by using a
calcium carbide method, and can be used as a mercury-free catalyst or a catalyst carrier.