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作者:

Bai, Yuanyuan (Bai, Yuanyuan.) | Wei, Lu (Wei, Lu.) | Yang, Mengfei (Yang, Mengfei.) | Chen, Huiyong (Chen, Huiyong.) | Holdren, Scott (Holdren, Scott.) | Zhu, Guanghui (Zhu, Guanghui.) | Tran, Dat T. (Tran, Dat T..) | Yao, Chunli (Yao, Chunli.) | Sun, Runcang (Sun, Runcang.) | Pan, Yanbo (Pan, Yanbo.) | Liu, Dongxia (Liu, Dongxia.)

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EI Scopus SCIE

摘要:

The synthesis of hierarchical lamellar zeolites with a controlled meso-/microporous morphology and acidity is an expanding area of research interest for a wide range of applications. Here, we report a onestep synthesis of a hierarchical meso-/microporous lamellar MFI-Sn/Al zeolite (i.e., containing both Lewis acidic Sn- and Al-sites and a Bronsted acidic Al-O(H)-Si site) and its catalytic application for the conversion of glucose into 5-(ethoxymethyl) furfural (EMF). The MFI-Sn/Al zeolite was prepared with the assistance of a diquaternary ammonium ([C22H45-N+(CH3)(2)-C6H12-N+(CH3)(2)-C6H13]Br2-, C22-6-6) template in a composition of 100SiO(2)/5C(22-6-6)/18.5Na(2)O/xAl(2)O(3)/ySnO(2)/2957H(2)O (x = 0.5, 1, and 2; y = 1 and 2, respectively). The MFI-Sn/Al zeolites innovatively feature dual meso-/microporosity and dual Lewis and Bronsted acidity, which enabled a three-step reaction cascade for EMF synthesis from glucose in ethanol solvent. The reaction proceeded via the isomerization of glucose to fructose over Lewis acidic Sn sites and the dehydration of fructose to 5-hydroxymethylfurfural (HMF) and then the etherification of HMF and ethanol to EMF over the Bronsted acidic Al-O(H)-Si sites. The co-existence of multiple acidities in a single zeolite catalyst enabled one-pot cascade reactions for carbohydrate upgrading. The dual meso-/microporosity in the MFI-Sn/Al zeolites facilitated mass transport in processing of bulky biomass molecules. The balance of both types of acidity and meso-/microporosity realized an EMF yield as high as 44% from the glucose reactant.

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作者机构:

  • [ 1 ] [Bai, Yuanyuan]Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA
  • [ 2 ] [Wei, Lu]Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA
  • [ 3 ] [Liu, Dongxia]Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA
  • [ 4 ] [Bai, Yuanyuan]China Natl Pulp & Paper Res Inst Co Ltd, Natl Engn Lab Pulp & Paper, Beijing 100102, Peoples R China
  • [ 5 ] [Bai, Yuanyuan]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China
  • [ 6 ] [Yao, Chunli]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China
  • [ 7 ] [Sun, Runcang]Beijing Forestry Univ, Beijing Key Lab Lignocellulos Chem, Beijing 100083, Peoples R China
  • [ 8 ] [Wei, Lu]Beijing Univ Technol, Coll Mat Sci & Engn, Beijing 100124, Peoples R China
  • [ 9 ] [Yang, Mengfei]Northwest Univ Xian, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China
  • [ 10 ] [Chen, Huiyong]Northwest Univ Xian, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China
  • [ 11 ] [Holdren, Scott]Univ Maryland, Dept Chem & Biochem, College Pk, MD 20742 USA
  • [ 12 ] [Zhu, Guanghui]Georgia Inst Technol, Sch Chem & Biomol Engn, Atlanta, GA 30332 USA
  • [ 13 ] [Tran, Dat T.]US Army Res Lab, RDRL SED E, 2800 Powder Mill Rd, Adelphi, MD 20783 USA
  • [ 14 ] [Pan, Yanbo]Univ Akron, Dept Chem & Biomol Engn, Akron, OH 44325 USA

通讯作者信息:

  • [Liu, Dongxia]Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20742 USA

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来源 :

JOURNAL OF MATERIALS CHEMISTRY A

ISSN: 2050-7488

年份: 2018

期: 17

卷: 6

页码: 7693-7705

1 1 . 9 0 0

JCR@2022

ESI学科: MATERIALS SCIENCE;

ESI高被引阀值:260

JCR分区:1

被引次数:

WoS核心集被引频次: 49

SCOPUS被引频次: 55

ESI高被引论文在榜: 0 展开所有

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