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

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Author(s):
Vieira, Jose Lucas ; Santos, Erick Alves ; Ribeiro, Caue ; Gallo, Jean Marcel R.
Total Authors: 4
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