Catalytic Oxidation of Lignin to Vanillin using metal oxides

化学学院(50：50)催化与计算化学。自20世纪50年代以来，木质素磺酸钠的好氧氧化法一直被用于从木质素生产工业香兰素。能源需求的增加和化石燃料使用造成的污染促使人们寻找环保的替代能源。木质素是制浆和造纸工业生产的一种交联型酚醛聚合物，特别有趣。木质素的转化通常在高温高压下在液体中进行。水热温度会导致固体催化剂活性中心失活，导致催化活性、选择性和产率较低。木质素的选择性转化需要对活性中心进行优化，以防止不必要的裂解和再冷凝，最大限度地减少氧气消耗，并促进废物最小化，从而有效地将木质素氧化为香草醛。

School of Chemistry (50:50) Catalysis and Computational Chemistry. Since the 1950s, the aerobic oxidation of sodium lignosulfonate has been used to produce industrial vanillin from lignin. The rise in energy demand and pollution from fossil fuel use has driven the search for eco-friendly alternatives. Lignin, a cross-linked phenolic polymer produced by the pulp and paper industries, is particularly interesting. Lignin conversion is normally done in a liquid at high temperatures and pressure. Hydrothermal temperatures cause deactivation of solid catalyst active sites, resulting in poor catalytic activity, selectivity, and yield. Selective lignin conversion requires active site optimization to prevent undesired cleavage and re-condensation, minimise oxygen consumption, and promote waste minimization for effective lignin oxidation to vanillin.