1608124-83-9Relevant academic research and scientific papers
CNF-functionalization as versatile tool for tuning activity in cellulose-derived product hydrogenation
Jouve, Andrea,Cattaneo, Stefano,Capelli, Sofia,Stucchi, Marta,Evangelisti, Claudio,Villa, Alberto,Prati, Laura
, (2019)
Carbon nanofibers (CNFs) have been functionalized by introducing O, N, and P containing groups in order to investigate the effect of support functionalization in Ru catalysed hydroxymethyl furfural (HMF) and levulinic acid (LA) hydrogenation. In the case of HMF, despite the fact that no effect on selectivity was observed (all the catalysts produced selectively gamma-valerolactone (GVL)), the functionalization strongly affected the activity of the reaction. O-containing and N-containing supports presented a higher activity compared to the bare support. On the contrary, in HMF hydrogenation, functionalization of the support did not have a beneficial effect on the activity of a Ru-catalysed reaction with respect to bare support and only CNFs-O behaved similarly to bare CNFs. In fact, when CNFs-N or CNFs-P were used as the supports, a lower activity was observed, as well as a change in selectivity in which the production of ethers (from the reaction with the solvent) greatly increased.
On demand production of ethers or alcohols from furfural and HMF by selecting the composition of a Zr/Si catalyst
Bossola, Filippo,Dal Santo, Vladimiro,Evangelisti, Claudio,Ravasio, Nicoletta,Scotti, Nicola,Zaccheria, Federica
, p. 7502 - 7511 (2020)
Zr/Si mixed oxides with different amounts of silica (0-50 wt%) were prepared by a simple sol-gel method. These catalysts were tested in a cascade reaction of furfural and 5-hydroxymethyl furfural (HMF) with 2-butanol to form the corresponding alcohols or ethers through a combination of transfer hydrogenation and etherification processes under mild conditions. The selectivity can be finely tuned by changing the silica content which heavily impacts the acid-base properties. On pure ZrO2, featuring acid-base pairs, only the catalytic transfer hydrogenation occurs leading to alcohol products. In contrast, on ZrSi30 the etherification reaction is strongly favored owing to near one-to-one Lewis and Br?nsted acid sites. Ethers can thus be produced in high yields (≥90%), in particular the highly valuable diether of 5-hydroxymethyl furfural. The catalysts were characterized by N2 and CO2 absorption isotherms, FT-IR of adsorbed pyridine, 2-propanol TPD, and STEM-EDX mapping. For the first time we show that the tuning of acid-base properties by simple silica addition, with the somewhat unexpected rise of Br?nsted acidity, may represent the starting point for the development of cheap but highly active and selective catalysts for furfural and HMF transformation.
CATALYST AND CATALYTIC PROCESS FOR THE ETHERIFICATION/REDUCTION OF FURFURYL DERIVATIVES TO TETRAHYDROFURFURYL ETHERS
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Paragraph 0095, (2015/11/16)
The invention relates to a method for producing tetrahydrofurfuryl ethers, characterised in that it involves carrying out consecutive etherification/reduction reactions based on a compound containing at least one furan ring, in the presence of at least one alcohol and at least one catalyst, optionally in the presence of H2. The catalytic process can be carried out in a cascade reaction ("one-pot"), operating under soft reaction conditions and without a solvent.
