دانلود رایگان مقاله لاتین مواد شیمیایی تکامل ارگانونیتروژن از سایت الزویر
عنوان فارسی مقاله:
ارزش افزوده مواد شیمیایی تکامل ارگانونیتروژن از تجزیه حرارتی کیتین و کیتوزان
عنوان انگلیسی مقاله:
Value-added organonitrogen chemicals evolution from the pyrolysis of chitin and chitosan
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Chitin is the second most abundant biopolymer on earth after cellulose, and the annual production is up to 1011 tonnes. It widely exists in the exoskeleton of crustacean and insects, the cell walls of fungi, etc., and is polymerized by N-acetyl-d-glucosamine with the -(1→4)-glucosidic bonds (Baran & Mentes¸ , 2015; Baran, Mentes¸ , & Arslan, 2015; Zeng, Hu, Gu, Fu, & Qin, 2015). On account of the distinctive structure and properties, chitin and its deacetylated product, viz. chitosan, are widely applied in the fields of agriculture, environmental protection, functional food, biomedical and biotechnology engineering, and textile industry, especially prepared as hydrogels and drug delivery materials (Baran, Ac¸ ıksöz, & Mentes¸ , 2016 Baran, Inanan, & Mentes¸ , 2016; Kumar, 2010; Kumar, Muzzarelli, Muzzarelli, Sashiwa, & Domd, 2004). Recently, in order to reduce the dependence on fossil resources, various biomass (including cellulose, hemicellulose, and lignin) were converted into value-added bio-chemicals, such as furan compounds (Mettler et al., 2012; Wang, Ren, Li, Deng, & Sun, 2015) and phe-nol compounds (Hu, Shen, Xiao, Wu, & Zhang, 2013; Singh & Ekhe, 2014). However, less attention has been paid on the conversion and utilization of chitin and chitosan. Previous research reported that chitin can be directly transformed to 3-acetamido-5-acetylfuran in solution with catalysts by the reconstruction of the pyranose ring (Chen, Chew, Kerton, & Yan, 2014; Chen, Gao, Wang, Chen, & Yan, 2015). However, these obtained furan derivatives did not perform much more difference with that derived from cellulose and hemicellulose. Apart from solvolysis, pyrolysis is another promising thermochemical technology (Bridgwater, Meier, & Radlein, 1999), which could convert biomass into value-added bio-fuel and bio-chemical rapidly. Initially, pyrolysis was used to detect the chitin in fossil arthropods (Bierstedt, Stankiewicz, Briggs, & Evershed, 1998) and molluscan shells (Furuhashi et al., 2009), and determine the amine content or the degree of acetylation of chitosan (Lal & Hayes, 1984; Sato et al., 1998). Afterwards, pyrolysis was used to investigate the thermogravimetric characteristics and kinetics of chitin and chitosan according to various dynamicmodels (Stolarek & Ledakowicz, 2005; Tang, Wang, & Chen, 2005; Zeng, Qin, Wang, & Li, 2011). Recently, research on chitin and chitosan pyrolysis turns to focus on their thermal conversion. Zeng et al. (2011, 2015) and Qiao et al. (2015) detected the volatiles from the thermogravimetric processes of chitin and chitosan using TG-FTIR and TG-MS respectively.
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کلمات کلیدی:
Determination of the Degree of Acetylation of Chitin/Chitosan by ... pubs.acs.org/doi/abs/10.1021/ac9706685 by H Sato - 1998 - Cited by 68 - Related articles Jan 1, 1998 - A new method to determine directly and rapidly the degree of acetylation of chitin/chitosan was developed based on reactive pyrolysis-gas ... Characterization of Chitin-Based Polymer Hybrids by Temperature ... pubs.acs.org/doi/pdf/10.1021/ma9702399 by H Sato - 1997 - Cited by 41 - Related articles Temperature-Programmed Analytical Pyrolysis Techniques. 1. ... formed from the chitin derivative were also evolved, suggesting the intermolecular interactions ... Chitin or chitosan (N- ... oxide) (PEO).7 On the other hand, chemical modifica-. Pyrolysis GC/MS and IR Spectroscopy in Chitin Analysis of Molluscan ... www.tandfonline.com/doi/pdf/10.1271/bbb.80498 by T FURUHASHI - 2009 - Cited by 18 - Related articles 1Emerging Focus Molecular Phylogenetics, Department of Evolutionary Biology, University of Vienna, .... chitosan test to the insoluble fractions after decalcifica- tion with ... putative protein-derived pyrolysis fragment compounds were abundant. PRIME PubMed | charring journal articles from PubMed https://www.unboundmedicine.com/medline/research/charring Value-added organonitrogen chemicals evolution from the pyrolysis of chitin and chitosan. [Journal Article]; CPCarbohydr Polym 2017 Jan 20; 156:118-124 ... Polysaccharides: Structural Diversity and Functional Versatility, ... https://books.google.com/books?isbn=1420030825 Severian Dumitriu - 2004 - Science (Air) 4.8 Â 1012 Thermal 57 Chitosan chloride 109 — Thermal 48 Chitin 124 — Acid ... of the reaction products of degradation and pyrolysis under different conditions. ... As suggested by the authors, the evolution of chemical water occurs by ... 21 International Symposium on Analytical and Applied Pyrolysis ... https://pyro2016.sciencesconf.org/program May 8, 2016 - 09:45 - 10:00, › INTEGRATED CATALYTIC PYROLYSIS: TOWARDS .... chemicals evolution from the pyrolysis of chitin and chitosan - Chao Liu, ... [PDF]Detailed Program - Pyro 2016 www.pyro2016.com/_media/planning-2016-03-11.pdf Mar 11, 2016 - KEYNOTE: BIOMASS PYROLYSIS VAPOR AS AN INTERMEDIATE TO FUELS AND CHEMICALS .... VALUE-ADDED NITROGENOUS CHEMICALS EVOLUTION FROM THE PYROLYSIS OF CHITIN AND. CHITOSAN.
