Promoting effect of Zn in high-loading Zn/Ni-SiO catalysts for selective hydrogen evolution from methylcyclohexane.

The dehydrogenation of methylcyclohexane to toluene was investigated over high-loading monometallic Ni-SiO and bimetallic Zn/Ni-SiO catalysts. The catalysts were prepared by the impregnation coupled with the advantageous heterophase sol-gel technique. Their performance was tested in a fixed-bed flow reactor at 250-350 °C, 0.