Furfural production from corncobs using thiourea as additive

Xu, Wei; Zhang, Suping; Lu, Junjie; Cai, Qinjie

doi:10.1002/ep.12489

Cited by 25 publications

(10 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…After optimizing the conditions and catalyst concentrations (170 °C, 90 min, in water), 34% yield was obtained without thiourea. However, when 16 mM thiourea was added, the yield increased to 61% . Without any additive, a similar result (37%) was reported for corncob conversion in hydrochloric acid .…”

Section: Synthesis Of Platform Chemicalssupporting

confidence: 82%

See 1 more Smart Citation

Catalytic Conversion of Carbohydrates to Initial Platform Chemicals: Chemistry and Sustainability

2017

View full text Add to dashboard Cite

The replacement of fossil resources that currently provide more than 90% of our energy needs and feedstocks of the chemical industry in combination with reduced emission of carbon dioxide is one of the most pressing challenges of mankind. Biomass as a globally available resource has been proposed as an alternative feedstock for production of basic building blocks, which could partially or even fully replace the currently utilized fossil-based ones in well-established chemical processes. The destruction of lignocellulosic feed followed by oxygen removal from its cellulose and hemicellulose content by catalytic processes results in the formation of initial platform chemicals (IPCs). However, their sustainable production strongly depends on the availability of resources, their efficient or even industrially viable conversion processes, and replenishment time of feedstocks. Herein, we overview recent advances and developments in catalytic transformations of the carbohydrate content of lignocellulosic biomass to IPCs (i.e., ethanol, 3-hydroxypropionic acid, isoprene, succinic and levulinic acids, furfural, and 5-hydroxymethylfurfural). The mechanistic aspects, development of new catalysts, different efficiency indicators (yield and selectivity), and conversion conditions of their production are presented and compared. The potential biochemical production routes utilizing recently engineered microorganisms are reviewed, as well. The sustainability metrics that could be applied to the chemical industry (individual set of sustainability indicators, composite indices methods, material and energy flow analysis-based metrics, and ethanol equivalents) are also overviewed as well as an outlook is provided to highlight challenges and opportunities associated with this huge research area.

show abstract

Section: Synthesis Of Platform Chemicalssupporting

confidence: 82%

“…However, when 16 mM thiourea was added, the yield increased to 61%. 287 Without any additive, a similar result (37%) was reported for corncob conversion in hydrochloric acid. 288 Formic acid appears as coproduct during the conversion of C 6 -fraction of biomass.…”

Section: Processing Of Succinic Acid (Downstream)supporting

confidence: 73%

Catalytic Conversion of Carbohydrates to Initial Platform Chemicals: Chemistry and Sustainability

2017

View full text Add to dashboard Cite

show abstract

“…Different additives such as thiourea, NaHSO 4 , NaCl were also tested as potential improvers of the dehydration process. For example, the impact of thiourea additive in the furfural production process from corncobs treatment using H 2 SO 4 was described (Xu et al, 2017 ). They reported that thiourea had for effect to improve the furfural yield that reached 61% under a liquid-solid ratio of 2:1 instead 34% with only H 2 SO 4 .…”

Section: Synthesis Of Furfural From Sugars and Polysaccharides Using mentioning

confidence: 99%

Hydrolysis of Hemicellulose and Derivatives—A Review of Recent Advances in the Production of Furfural

et al. 2018

View full text Add to dashboard Cite

Biobased production of furfural has been known for decades. Nevertheless, bioeconomy and circular economy concepts is much more recent and has motivated a regain of interest of dedicated research to improve production modes and expand potential uses. Accordingly, this review paper aims essentially at outlining recent breakthroughs obtained in the field of furfural production from sugars and polysaccharides feedstocks. The review discusses advances obtained in major production pathways recently explored splitting in the following categories: (i) non-catalytic routes like use of critical solvents or hot water pretreatment, (ii) use of various homogeneous catalysts like mineral or organic acids, metal salts or ionic liquids, (iii) feedstock dehydration making use of various solid acid catalysts; (iv) feedstock dehydration making use of supported catalysts, (v) other heterogeneous catalytic routes. The paper also briefly overviews current understanding of furfural chemical synthesis and its underpinning mechanism as well as safety issues pertaining to the substance. Eventually, some remaining research topics are put in perspective for further optimization of biobased furfural production.

show abstract

“…Thiocyanate is a negatively charged polyatomic ion with a linear structure, which possesses chemical properties similar to halide ions . In inorganic and organic industries, thiocyanate has been used as chemical raw materials for manufacturing thiourea , cyanide and ferrocyanide , as well as efficient catalyst for polymerization of organic compounds . Moreover, thiocyanate has been wildly employed in recovery of noble metals in metallurgy .…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Behaviors and Determination of Thiocyanate on Multiwalled Carbon Nanotubes‐Cetyltrimethylammonium Bromide Modified Electrode

Xie

Zhang

2018

Electroanalysis

View full text Add to dashboard Cite

Electrochemical behaviors of thiocyanate on three carbon nanotubes (CNTs) composites modified glass carbon electrode (GCE) were studied. The modified electrodes were prepared with CNTs suspended in aqueous solutions of chitosan (CHT), poly(diallyldimethylammonium chloride) (PDDA) and cetyltrimethylammonium bromide (CTAB), respectively. The results indicated that CNTs‐CTAB enhanced the voltammetric response of thiocyanate more remarkably than other two CNTs composites. Then, the voltammetric behaviors of thiocyanate on CNTs‐CTAB/GCE were investigated systematically to develop an electrochemical sensor for thiocyanate determination. The solution pH, supporting electrolyte, amount of CNTs‐CTAB suspension, and accumulation time were optimized. Under optimum conditions, the anodic peak current on CNTs‐CTAB/GCE increased linearly with increasing the thiocyanate concentration from 5.0×10−6 to 1.0×10−4 mol L−1. The proposed CNTs‐CTAB/GCE was demonstrated to provide a fast and low‐cost approach to monitoring the adsorptive removal of thiocyanate with layered double hydrotalcite (LDH).

show abstract

Furfural production from corncobs using thiourea as additive

Cited by 25 publications

References 39 publications

Catalytic Conversion of Carbohydrates to Initial Platform Chemicals: Chemistry and Sustainability

Catalytic Conversion of Carbohydrates to Initial Platform Chemicals: Chemistry and Sustainability

Hydrolysis of Hemicellulose and Derivatives—A Review of Recent Advances in the Production of Furfural

Voltammetric Behaviors and Determination of Thiocyanate on Multiwalled Carbon Nanotubes‐Cetyltrimethylammonium Bromide Modified Electrode

Contact Info

Product

Resources

About