Ciriminna Rosaria, Pandarus Valerica, Delisi Riccardo, Scurria Antonino, Casaletto Maria Pia, Giordano Francesco, Béland François, Pagliaro Mario
Istituto per lo Studio dei Materiali Nanostrutturati, CNR, via U. La Malfa 153, 90146 Palermo, PA Italy.
SiliCycle Inc., 2500, Parc Technologique Blvd, Quebec City, QC G1P 4S6 Canada.
Chem Cent J. 2016 Oct 13;10:61. doi: 10.1186/s13065-016-0208-6. eCollection 2016.
The introduction of an heterogeneously catalyzed gold-based alcohol oxidation process of broad applicability using a clean primary oxidant would be highly desirable. Gold is non toxic and carbonyl and carboxyl compounds are widely used to produce medicines, plastics, colorants, paints, detergents, fragrances, flavors, and other valued functional products.
The sol-gel entrapment of gold nanoparticles in hybrid silica improves gold-based oxidation catalysis applied to the selective oxidation of alcohols with aqueous hydrogen peroxide as eco-friendly primary oxidant. Pronounced physical and chemical stabilization of the sol-gel entrapped Au nanoparticles is reflected in catalyst recyclability.
Potential implications of these findings are significant, especially considering that the highly stable, mesoporous glassy catalyst is ideally suited for application in microreactors for carrying out the reaction under flow. Graphical abstractSelective oxidation of 2-phenylethanol over SiliaCat Au nanoparticle. Hydrogen peroxide is the clean oxidant.
采用清洁的一级氧化剂引入一种具有广泛适用性的非均相催化金基醇氧化工艺将是非常理想的。金无毒，羰基和羧基化合物被广泛用于生产药品、塑料、着色剂、涂料、洗涤剂、香料、调味剂和其他有价值的功能产品。
金纳米颗粒在杂化二氧化硅中的溶胶-凝胶包封改善了金基氧化催化性能，该催化性能应用于以过氧化氢水溶液作为生态友好型一级氧化剂的醇的选择性氧化。溶胶-凝胶包封的金纳米颗粒明显的物理和化学稳定性体现在催化剂的可回收性上。
这些发现的潜在意义重大，特别是考虑到这种高度稳定的介孔玻璃状催化剂非常适合应用于微反应器中以在流动条件下进行反应。图形摘要2-苯乙醇在SiliaCat金纳米颗粒上的选择性氧化。过氧化氢是清洁氧化剂。
