Effect of IB-metal on Ni/SiO2 catalyst for selective hydrogenation of acetylene

Xylitol Production from Xylose by Catalytic Hydrogenation over an Efficient Cu–Ni/SiO2 Bimetallic Catalyst

“…Also, we see that the metallic copper and the Cu–Ni alloy appear simultaneously during the in situ XRD measurement (Figure c,d). These observations verified that the formation of the Cu–Ni alloy made the reduction of CuO and NiO much easier than the corresponding monometallic catalysts, and the presence of reduced copper induced the reduction of NiO. , These results agreed well with the results of H 2 -TPR.…”

“…These diffraction peaks correspond to the (111), (200), and (220) crystal planes of metallic Ni, 38 and the peak intensity of the corresponding monometallic catalysts, and the presence of reduced copper induced the reduction of NiO. 48,49 These results agreed well with the results of H 2 -TPR.…”

Hydroxyl improving the activity, selectivity and stability of supported Ni single atoms for selective semi-hydrogenation

“…However, Ni metal can oligomerize hydrocarbon reactants, which subsequently reduces catalytic selectivity in acetylene hydrogenation towards ethylene. [10][11][12] Improved selectivity for acetylene hydrogenation towards ethylene can be achieved by alloying Ni with inactive metals, such as Zn, [13][14][15][16][17] Cu, [18][19][20] Au, [21][22][23] Ga [24][25][26] and Sn, 27,28 to form bimetallic particles. Nevertheless, the resulting bimetallic catalysts with the presence of an extended ensemble are not free from the formation of ethane and oligomers.…”

Ni -chitosan/carbon nanotube: An efficient biopolymer -inorganic catalyst for selective hydrogenation of acetylene

“…This process makes ethylene to be contaminated with 0.5–2% of acetylene, which can poison the Ziegler-Natta catalysts used for downstream ethylene polymerization [ 2 ]. Selective hydrogenation of acetylene is always employed in industry to remove the trace acetylene to an acceptable level (<5 ppm) [ 3 , 4 ]. Namely, acetylene is effectively removed from ethylene-rich streams via selective hydrogenation to ethylene.…”