Dissolution of microcrystalline cellulose in phosphoric acid-molecular changes and kinetics

Junhua Zhang; Jingqiang Zhang; Lu Lin; Tianming Chen; Jun Zhang; Shijie Liu; Zhenjiang Li; Pingkai Ouyang

doi:10.3390/molecules14125027

Dissolution of microcrystalline cellulose in phosphoric acid-molecular changes and kinetics

Junhua Zhang, Jingqiang Zhang, Lu Lin, Tianming Chen, Jun Zhang, Shijie Liu, Zhenjiang Li, Pingkai Ouyang

Research output: Contribution to journal › Article › peer-review

102 Scopus citations

Abstract

In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning ¹³C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A ₀ and E_a were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h^-1 respectively. The pre-exponential factor (A₀) was 1.2 × 10 ⁶ h^-1, and the activation energy (E_a) was 42.4 k J/mol.

Original language	English
Pages (from-to)	5027-5041
Number of pages	15
Journal	Molecules
Volume	14
Issue number	12
DOIs	https://doi.org/10.3390/molecules14125027
State	Published - Dec 2009
Externally published	Yes

Keywords

Decrystallization
Kinetic
MCC
Phosphoric acid
Structural change

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10.3390/molecules14125027

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title = "Dissolution of microcrystalline cellulose in phosphoric acid-molecular changes and kinetics",

abstract = "In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A 0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 10 6 h-1, and the activation energy (Ea) was 42.4 k J/mol.",

keywords = "Decrystallization, Kinetic, MCC, Phosphoric acid, Structural change",

author = "Junhua Zhang and Jingqiang Zhang and Lu Lin and Tianming Chen and Jun Zhang and Shijie Liu and Zhenjiang Li and Pingkai Ouyang",

year = "2009",

month = dec,

doi = "10.3390/molecules14125027",

language = "英语",

volume = "14",

pages = "5027--5041",

journal = "Molecules",

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TY - JOUR

T1 - Dissolution of microcrystalline cellulose in phosphoric acid-molecular changes and kinetics

AU - Zhang, Junhua

AU - Zhang, Jingqiang

AU - Lin, Lu

AU - Chen, Tianming

AU - Zhang, Jun

AU - Liu, Shijie

AU - Li, Zhenjiang

AU - Ouyang, Pingkai

PY - 2009/12

Y1 - 2009/12

N2 - In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A 0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 10 6 h-1, and the activation energy (Ea) was 42.4 k J/mol.

AB - In this study, we aimed to dissolve microcrystalline cellulose (MCC) with phosphoric acid to obtain high-quality fermentable saccharides. MCC was directly dissolved in phosphoric acid (the concentration was 83%) for 10 hours at temperatures of 30, 50, and 70 °C. The structural changes of MCC were determined in detail with X-ray powder diffraction, solid-state cross-polarization magic angle spinning 13C-NMR, and X-ray photoelectron spectroscopy. The kinetics of MCC decrystallization during treatment with phosphoric acid was also compared at 30, 50, and 70 °C. With the assumption of first order kinetics, the Arrhenius parameters of K, A 0 and Ea were calculated. The rate constants of decrystallization reaction (K) were 0.06, 0.17, and 0.12 h-1 respectively. The pre-exponential factor (A0) was 1.2 × 10 6 h-1, and the activation energy (Ea) was 42.4 k J/mol.

KW - Decrystallization

KW - Kinetic

KW - MCC

KW - Phosphoric acid

KW - Structural change

UR - http://www.scopus.com/inward/record.url?scp=73849137132&partnerID=8YFLogxK

U2 - 10.3390/molecules14125027

DO - 10.3390/molecules14125027

M3 - 文章

C2 - 20032875

AN - SCOPUS:73849137132

SN - 1420-3049

VL - 14

SP - 5027

EP - 5041

JO - Molecules

JF - Molecules

IS - 12

ER -

Dissolution of microcrystalline cellulose in phosphoric acid-molecular changes and kinetics

Abstract

Keywords

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