Selective hydrogenation of vanillin to vanillyl alcohol over Pd, Pt, and Au catalysts supported on an advanced nitrogen-containing carbon material produced from food waste

Confining Co-Based Nanocatalysts by Ultrathin Nanotubes for Efficient Transfer Hydrogenation of Biomass Derivatives

“…As shown in Figure d, the reduction in the catalytic performance of CoAl NT 160 at different temperatures was investigated under identical conditions. A moderate conversion of LA (52.0%) and a trace of GVL selectivity (4.4%) could be obtained when the CoAl NT 160 precursor was reduced at 600 °C, which was owing to the inadequate reduction of Co NPs that failed to provide sufficient active sites for the CTH of LA, as evidenced by the PXRD patterns in Figure S9, which was also well-consistent with previous works. , The catalytic activity of the CoAl NT 160‑H catalyst gradually increased with increasing reduction temperature, and the optimal CTH performance of LA was achieved at the reduction temperature of 650 °C owing to the further reduction of oxidized Co species to Co NPs, giving a GVL yield reaching 93.54%. More importantly, as shown in Table S3, the optimal CoAl NT 160‑H catalyst exhibited good catalytic activity toward other biomass derivatives, indicating the good generality of the catalyst for the CTH reaction of various biomass derivatives.…”

In-situ Synthesis of Nitrogen-doped Graphene Layer Encapsulated Palladium Nanoparticles for Highly Selective Hydrogenation of Vanillin

“…对醛基的加氢还原可以得到香草醇, 香草醇具有 与香兰素相似的甜味和坚果香味, 且更加持久和稳定, 被广泛应用于食品、医药和香水行业 [5] ; 由于香兰素含 氧量高, 作为生物燃料存在能量密度低、燃烧不稳定、 腐蚀过度等缺点, 对醛基进行加氢脱氧反应生成对甲基 愈创木酚(MMP)可以有效降低含氧量从而提高生物燃 油的品质. 然而香兰素上的多种官能团导致加氢过程中 存在不可控的副反应, 因此香兰素的选择性转化是具有 挑战性的 [6] . 对于香兰素加氢反应而言, 反应难点在于 加氢产物的可控性转化.…”

Cu-Based Catalysts Supported on H3PO4-Activated Coffee Biochar for Selective Reduction of Nitroaromatics

“…20 Therefore, it has received wide attention in different emerging fields such as energy storage, environmental remediation, and catalysis. 20,21 Coffee residues, which can be produced in coffee shops all over the world, are usually abandoned or landfilled. In contrast to other biochar precursors, coffee residues are rich in starch, vegetable oils, sugars, and proteins and could be used as a promising biomass for the synthesis of heteroatom-doped biochar composites.…”

“…With the increasing concern for sustainable development, the synthesis of catalysts from mother nature is attracting more and more attention . Biochar, as an economical and environmentally friendly material derived from mother nature, usually has various desirable characteristics, including high porosity, rich oxygen functional groups, and excellent ion-exchange performance . Therefore, it has received wide attention in different emerging fields such as energy storage, environmental remediation, and catalysis. , Coffee residues, which can be produced in coffee shops all over the world, are usually abandoned or landfilled.…”

“…Biochar, as an economical and environmentally friendly material derived from mother nature, usually has various desirable characteristics, including high porosity, rich oxygen functional groups, and excellent ion-exchange performance . Therefore, it has received wide attention in different emerging fields such as energy storage, environmental remediation, and catalysis. , Coffee residues, which can be produced in coffee shops all over the world, are usually abandoned or landfilled. In contrast to other biochar precursors, coffee residues are rich in starch, vegetable oils, sugars, and proteins and could be used as a promising biomass for the synthesis of heteroatom-doped biochar composites. − However, biochar produced by a direct pyrolysis method generally has a low BET surface area, and a post-treatment activation procedure is usually required. , Due to the pollution-free nature of the resulting biochar, significant preference has been given to the use of H 3 PO 4 as the activating agent. , …”