The Impact of the Ratio Between Stronger and Weaker Acid Sites on the Production of 5-Hydroxymethylfurfural and Furfural from Monosaccharides

Author(s)

Vieira, Jose Lucas ; Santos, Erick Alves ; Ribeiro, Caue ; Gallo, Jean Marcel R.

• Document type: Journal article
• Source: CHEMCATCHEM; v. 16, n. 13, p. 10-pg., 2024-03-22.

Abstract

Sulfonated carbons and commercial Amberlyst 15 and 45 served as model catalysts to explore the impact of the ratio between stronger and weaker acid sites (NS/NW) on 5-hydroxymethylfurfural (HMF) and furfural production from fructose and xylose. Catalysts with varying structural and surface properties, and consequently different NS/NW ratios, were prepared from diverse templated mesoporous carbons and distinct sulfonation methods. HMF or furfural yields exhibited an exponential correlation with the NS/NW ratio. However, the catalytic activity per site (TON) displayed a volcano-like plot, reaching a maximum between NS/NW=2-4. Consequently, our findings suggest the involvement of both strong (sulfonic acid) and weak acid (surface carboxylic acid, alcohol, and phenol groups) sites in monosaccharide dehydration mechanisms. These insights may guide the development of novel catalysts. Sulfonated carbons with 20-33 % of weaker acid sites (surface carboxylic acid, alcohol, and phenol groups) present the best turnover number of platform molecule production (TONFuran) from fructose and xylose. image (AU)

• FAPESP's process: 22/02222-0 - Development of prototype pouch cells of lithium-sulfur (Li-S) batteries in solid-liquid state with high stability and advanced scale of technological maturity
• Grantee: Érick Alves Santos
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 19/02132-8 - Mesoporous catalysts with Lewis acid and Brønsted acid bifunctionality for the direct conversion of biomass-derived saccharides into platform chemicals
• Grantee: José Lucas Vieira
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 20/04109-0 - Synthesis of porous acid carbons for the conversion of glucose to HMF
• Grantee: José Lucas Vieira
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
• FAPESP's process: 18/01258-5 - Novel chemical catalytic and photocatalytic processes for the direct conversion of methane and CO2 to products
• Grantee: José Maria Correa Bueno
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 21/14442-1 - EMU approved in grant 2017/11958-1: TGA
• Grantee: Hudson Giovani Zanin
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 16/02128-2 - Design of new catalytic systems for the biorefinery
• Grantee: Jean Marcel Ribeiro Gallo
• Support Opportunities: Research Grants - Young Investigators Grants
• FAPESP's process: 15/50093-0 - Brazil and UK collaboration for energy storage and supply
• Grantee: Hudson Giovani Zanin
• Support Opportunities: Regular Research Grants
• FAPESP's process: 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country
• Grantee: Ana Flávia Nogueira
• Support Opportunities: Research Grants - Research Centers in Engineering Program
• FAPESP's process: 14/02163-7 - Development of supercapacitors devices from graphene, carbon nanotubes and diamonds
• Grantee: Hudson Giovani Zanin
• Support Opportunities: Research Grants - Young Investigators Grants