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Recent progress in the direct synthesis of γ-valerolactone from biomass-derived sugars catalyzed by RANEY® Ni–Sn alloy supported on aluminium hydroxide

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Abstract

The direct synthesis of γ-valerolactone (GVL) from biomass-derived sugars (e.g., cellobiose, sucrose, glucose, and fructose) using RANEY® nickel–tin alloy supported on aluminium hydroxide (RNi–Sn(x)/AlOH; x is the loading amount of Sn) catalysts has been investigated. A RNi–Sn(1.04)/AlOH (1.04 = loading amount of Sn (mmol)) catalyst exhibited the highest yield of GVL from cellobiose (37%), sucrose (67.3%), glucose (71.6%), and fructose (74.9%), whereas conventional RANEY® Ni and RNi/AlOH catalysts produced only C-6 sugar alcohols (sorbitol & mannitol) at 443 K, H2 3.0 MPa for 12 h. The reduction of RNi–Sn(x)/AlOH with H2 at 673–873 K for 1.5 h resulted in the formation of Ni–Sn alloy phases (e.g., Ni3Sn and Ni3Sn2) and caused the transformation of aluminium hydroxide (AlOH) to amorphous alumina (AA). The RNi–Sn(2.14)/AA 873 K/H2 catalyst contained a Ni3Sn2 alloy as the major phase, which exhibited the best yield of GVL from sucrose (65.3%) under the same reaction conditions. The RNi–Sn(1.04)/AlOH catalyst was reusable and stable for at least five consecutive reaction runs.

Graphical abstract: Recent progress in the direct synthesis of γ-valerolactone from biomass-derived sugars catalyzed by RANEY® Ni–Sn alloy supported on aluminium hydroxide

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Article information


Submitted
06 Jul 2020
Accepted
21 Sep 2020
First published
21 Sep 2020

Catal. Sci. Technol., 2020, Advance Article
Article type
Paper

Recent progress in the direct synthesis of γ-valerolactone from biomass-derived sugars catalyzed by RANEY® Ni–Sn alloy supported on aluminium hydroxide

Rodiansono, M. D. Astuti, K. Mustikasari, S. Husain and Sutomo, Catal. Sci. Technol., 2020, Advance Article , DOI: 10.1039/D0CY01356K

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