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Synthesis and modification of graphene oxide-like carbon for conversion of hemicellulose to furfural from bagasse
Biomass & Bioenergy ( IF 6 ) Pub Date : 2023-05-10 , DOI: 10.1016/j.biombioe.2023.106823
Nguyen Thi Hanh, Do Gia Nghiem, Ninh Thi Tinh, Nguyen Minh Dat, Le Minh Bao, Ton That Buu, Pham Phi Bao, Dang Duc Nhan, Tat Minh Hoang, Nguyen Nhat Khoa, Pham Tan Khang, Mai Thanh Phong, Huu Hieu Nguyen

The utilization of biomass to convert into valuable chemicals has been receiving research interest recently. In this study, the catalyst with a similar structure to graphene oxide was synthesized from bagasse (B-GO) by calcination using cellulose as the main carbon source. The influences of calcination temperature, calcination time, and cellulose:ferrocene ratios on the FTIR and furfural yield of B-GO were investigated, respectively. The sulfonated graphene oxide-like catalyst (B-SGO) was prepared from B-GO by sulfonation method with sulfuric acid for the application of converting hemicellulose in bagasse into furfural. The characteristics of B-GO and B-SGO materials were analyzed via modern analytical methods. The characteristic analysis of B-SGO results indicated that SO3H was successfully attached to the B-GO with a sulfur mass ratio of 0.79%, increasing the acidity of the material and enhancing the catalytic efficiency. The effects of reaction temperature, reaction time, catalyst content, NaCl content, and hemicellulose dosage on the furfural yield of B-SGO were also investigated, respectively. The result showed the highest furfural yield achieved at 75.55% when conducting the reaction at 190°C in 120 min with the catalyst content at 1%, 0.1 mol/L NaCl, and a hemicellulose dosage of 1.5 g. Thereby, showing the potential application of synthesized materials from biomass in the process of converting hemicellulose into furfural along with utilizing the brackish water and wastewater containing low salt content as the solvent for the conversion process.



中文翻译:

用于甘蔗渣半纤维素转化为糠醛的类氧化石墨烯碳的合成与改性

利用生物质转化为有价值的化学品最近受到了研究兴趣。在这项研究中,以纤维素为主要碳源,通过煅烧甘蔗渣(B-GO)合成了与氧化石墨烯结构相似的催化剂。分别研究了煅烧温度、煅烧时间和纤维素与二茂铁的比例对 B-GO 的 FTIR 和糠醛收率的影响。以B-GO为原料,采用硫酸磺化法制备磺化类氧化石墨烯催化剂(B-SGO),用于将甘蔗渣中的半纤维素转化为糠醛。通过现代分析方法分析了B-GO和B-SGO材料的特性。B-SGO结果的特征分析表明SO 3 H成功连接到B-GO上,硫质量比为0.79%,增加了材料的酸度,提高了催化效率。还分别考察了反应温度、反应时间、催化剂用量、NaCl用量和半纤维素用量对B-SGO糠醛产率的影响。结果表明,当催化剂含量为1%、0.1 mol/L NaCl、半纤维素用量为1.5 g时,在190℃下反应120 min,糠醛收率最高,为75.55%。从而展示了生物质合成材料在将半纤维素转化为糠醛的过程中以及利用含盐量低的苦咸水和废水作为转化过程溶剂的潜在应用。

更新日期:2023-05-11
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