PMID- 33168245
OWN - NLM
STAT- PubMed-not-MEDLINE
DCOM- 20210119
LR  - 20210119
IS  - 1879-1026 (Electronic)
IS  - 0048-9697 (Linking)
VI  - 760
DP  - 2021 Mar 15
TI  - Microwave-assisted liquefaction of carbohydrates for 5-hydroxymethylfurfural 
      using tungstophosphoric acid encapsulated dendritic fibrous mesoporous silica as 
      a catalyst.
PG  - 143379
LID - S0048-9697(20)36910-2 [pii]
LID - 10.1016/j.scitotenv.2020.143379 [doi]
AB  - Tungstophosphoric acid (TPA) encapsulated dendritic fibrous silica KCC-1 was 
      prepared via a microemulsion system with the simple reflux method using 
      cetyltrimethylammonium bromide as a structure-directing agent. The TPA 
      impregnated on KCC-1 (ITPA-KCC-1) was also prepared for comparative. Various 
      physicochemical techniques were used to characterize the synthesized materials 
      and their activity evaluated in the 5-hydroxymethylfurfural (HMF) formation from 
      carbohydrates derivatives of fructose, glucose and cellulose. The effect of 
      various factors such as catalyst to substrate ratio, different solvents and 
      temperature were investigated on the formation of HMF. The resultant encapsulated 
      catalyst was very active in fructose dehydration with the yield of 92% HMF and 
      full conversion of fructose at 120  degrees C for 30 min under the microwave heating 
      condition without any salt additive in the THF solvent system as well as 95% in 
      MIBK solvent. The HMF yield was achieved by 58% and 16.2% from glucose and 
      cellulose in the DMSO solvent, respectively. The TPA-KCC-1 can be separated 
      easily after reaction from the reaction mixture and reused atleast five times 
      without substantial loss in catalytic activity. This study provides an easy 
      encapsulation method for TPA in dendritic fibrous silica KCC-1 as a heterogeneous 
      catalyst, and it should have great application potential in other biomass 
      valorization processes.
CI  - Copyright (c) 2020 Elsevier B.V. All rights reserved.
FAU - Vasudevan, Srinivasan Vinju
AU  - Vasudevan SV
AD  - Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of 
      Education, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
FAU - Kong, Xianghai
AU  - Kong X
AD  - Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of 
      Education, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
FAU - Cao, Mengjie
AU  - Cao M
AD  - Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of 
      Education, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
FAU - Wang, Mei
AU  - Wang M
AD  - Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of 
      Education, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
FAU - Mao, Hanping
AU  - Mao H
AD  - Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of 
      Education, Jiangsu University, Zhenjiang, Jiangsu 212013, China.
FAU - Bu, Quan
AU  - Bu Q
AD  - Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of 
      Education, Jiangsu University, Zhenjiang, Jiangsu 212013, China. Electronic 
      address: qbu@ujs.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20201101
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
SB  - IM
OTO - NOTNLM
OT  - 5-Hydroxymethylfurfural
OT  - Carbohydrates dehydration
OT  - Microwave-assisted catalysis
OT  - Solid acid catalyst
COIS- Declaration of competing interest The authors declared that they have no 
      conflicts of interest to this work.
EDAT- 2020/11/11 06:00
MHDA- 2020/11/11 06:01
CRDT- 2020/11/10 05:35
PHST- 2020/07/30 00:00 [received]
PHST- 2020/10/16 00:00 [revised]
PHST- 2020/10/16 00:00 [accepted]
PHST- 2020/11/11 06:00 [pubmed]
PHST- 2020/11/11 06:01 [medline]
PHST- 2020/11/10 05:35 [entrez]
AID - S0048-9697(20)36910-2 [pii]
AID - 10.1016/j.scitotenv.2020.143379 [doi]
PST - ppublish
SO  - Sci Total Environ. 2021 Mar 15;760:143379. doi: 10.1016/j.scitotenv.2020.143379. 
      Epub 2020 Nov 1.