دانلود رایگان مقاله لاتین ایزوسورباید از سوربیتول از سایت الزویر
عنوان فارسی مقاله:
تولید ایزوسورباید از سوربیتول بر متخلخل کاتالیزور زیرکونیوم فسفات
عنوان انگلیسی مقاله:
Isosorbide production from sorbitol over porous zirconium phosphate catalyst
سال انتشار : 2016
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مقدمه انگلیسی مقاله:
1. Introduction
Recently, great efforts have been devoted to the catalytic conversion of renewable biomass and/or biomass-derived feedstocks to fine chemicals and liquid fuels to fulfill the sustainable development [1–5]. In particular, sorbitol, known as one of the top twelve platform chemicals, has achieved considerable attention and has a special application in chemicals, fuels, commodity to partially replace conventional fossil fuels [6–9]. Meanwhile, sorbitol as an important biomass-derived material could be readily produced from enormous cellulose or lignocellulose [10,11]. Among the various sorbitol-derived chemicals, isosorbide(1.4:3.6- di-anhydrohexitol), a product of sorbitol dehydration, is regarded as one of the most promising derivates considering its typical application in the polymer and medicine field because of its rigid molecular structure and chiral centers [12,13]. Notably, incorporation of isosorbide monomer into the poly(ethyleneterephthalate) polymer (PET) might greatly enhance its glass transition temperature. Currently, isosorbide also acted as an promising alternativeRecently, great efforts have been devoted to the catalytic conversion of renewable biomass and/or biomass-derived feedstocks to fine chemicals and liquid fuels to fulfill the sustainable development [1–5]. In particular, sorbitol, known as one of the top twelve platform chemicals, has achieved considerable attention and has a special application in chemicals, fuels, commodity to partially replace conventional fossil fuels [6–9]. Meanwhile, sorbitol as an important biomass-derived material could be readily produced from enormous cellulose or lignocellulose [10,11]. Among the various sorbitol-derived chemicals, isosorbide(1.4:3.6- di-anhydrohexitol), a product of sorbitol dehydration, is regarded as one of the most promising derivates considering its typical application in the polymer and medicine field because of its rigid molecular structure and chiral centers [12,13]. Notably, incorporation of isosorbide monomer into the poly(ethyleneterephthalate) polymer (PET) might greatly enhance its glass transition temperature. Currently, isosorbide also acted as an promising alternativeeral acids because of their environmentally friendly nature with respect to easy separation, less corrosiveness and waste [21–23]. Consequently, several solid acid catalysts such as sulfuated copper oxide [24], supported heteropolyacid [25], zeolites [26,27], superhydrophobic mesoporous acid (P-SO3H) [28], Amberlyst-15 [29] and metal phosphates [30,31] have been selected in the catalytic dehydration of sorbitol. Nevertheless, the process using heterogeneous catalysts still has not been commercialized. Most of the studied solid acid samples normally need higher reaction temperature and more reaction time to achieve satisfactory isosorbide yield leading to high operation cost. Additionally, zeolite based catalysts suffered from the readily deactivation because ofthe structure distortion during the reaction process [32]. Some catalysts also exhibited less stability due to serious leaching of acid sites and several other ones were toxic like tin phosphate [33,34]. Therefore, itis desirable to development an efficient catalyst for the dehydration of sorbitol that could be operated at moderate conditions. Generally, zirconium phosphate is one of the most promising solid acids for dehydration reactions. Much efforts have been conducted on zirconium phophate, considering its several merits such as nontoxicity, thermal stability, eco-friendly, strong acidity, recycling etc [35–37]. Moreover, many literatures have described the synthesis of high-valued chemicals from biomassderived feedstocks over zirconium phosphate [38,39]. Meanwhile, the incorporation of enormous nanopores in solid acid catalysts might remarkably improve the mass transfer of reactants and facilitate the exposure of acid sites leading to better catalytic behavior in various reactions like isomerisation, dehydration, esterification etc. To the best of our knowledge, the application of zirconium phosphate with porous structure for the catalytic dehydration of sorbitol has still been in its infancy. Rusu et al. [40] investigated the isosorbide productionusing trivalent and quadrivalent phosphate as solid acid catalysts and the best catalytic performance was obtained over boron phosphate sample. In this work, a zirconium phosphate catalyst with porous structure was successfully synthesized by a sol-gel process using P123 as a sacrifice template and elaborately investigated to design an effective, environmental-benign catalystfor isosorbide production. Catalytic parameters (reaction temperature, reaction time, catalyst amounts etc) were studied in detail and the results were compared to other solid acid catalyst. Additionally, a systematic characterization of the as-prepared catalyst (XRD, SEM, TEM, FTIR, pyridine adsorption, NH3-TPD, BET etc) were conducted to establish a relationship between catalyst textural properties and catalytic behavior.
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کلمات کلیدی:
Applied catalysis. A, General - Terkko Navigator https://www.terkko.helsinki.fi/.../15520749_isosorbide-production-... Translate this page Isosorbide production from sorbitol over porous zirconium phosphate catalyst. Added 191 days ago (15.10.2016). Journal: Applied catalysis. A, General. [PDF]review - RSC Publishing - Royal Society of Chemistry pubs.rsc.org/en/content/getauthorversionpdf/C4RA06466F can be produced through the aqueous-phase reforming and steam ... porous solid materials for energy and .... zirconium phosphates combined with Ru/C. Ball-milled ... a SOR: sorbitol, XYL: xylitol, SUA: sugar alcohols, ISO: isosorbide, SOT: ... Isosorbide. Preparation, Properties and Chemistry - Flèche - 1986 ... onlinelibrary.wiley.com/doi/10.1002/star.19860380107/full by G Flèche - 1986 - Cited by 126 - Related articles Isosorbide is obtained by dehydration of sorbitol and therefore can be considered as a valuable product from biomass. The acid-catalyzed reaction gives rise to ... [PDF]Liquid-phase dehydration of sorbitol to isosorbide using sulfated ... drdineshkumarmishra.weebly.com/uploads/2/0/3/8/20387661/paper_23.pdf Keywords: Sorbitol dehydration. Isosorbide. Solid acid. Zirconia. Sulfation. a b s t r a c t ... resin [7] have recently been tried for the production of isosorbide from sorbitol. .... alysts were obtained at -196 ◦C with a surface area and porosity analyzer ... reaction mixture was stirred magnetically all through the reaction. After the ... Applied Catalysis A, General (v.528, #C) | www.chemweb.com https://www.chemweb.com/articles/0926860X/0528000C Hydrodeoxygenation of guaiacol over Ni@Pd and Ni@Pt bimetallic overlayer .... Isosorbide production from sorbitol over porous zirconium phosphate catalyst by ... Oral Presentations - ccesc2016 www.ccesc2016.net/Orals.html O-22, Sep 7th, 11:30, 11:50, Hydrogen production by ethanol reforming on Ni-based ... reaction over Ni supported on modified with CeO2 or La2O3 zirconia catalysts ... of efficient oxidative desulfurization catalytic systems based in porous materials ... Isosorbide production from sorbitol over aluminosilicate zeolites: catalysts ... Jet-Fuel Range Hydrocarbons from Biomass-Derived Sorbitol over Ni ... www.mdpi.com/2073-4344/5/4/2147/htm by Y Weng - 2015 - Cited by 5 - Related articles Dec 15, 2015 - However, conventional technologies for bio-fuel production cannot produce these products ... catalytic conversion of biomass sorbitol over Ni-HZSM-5/SBA-15 catalyst. ... The micropore pore diameter range was 0.4–0.8 nm and mesoporous .... Single HZSM-5 obtained high isosorbide yield (56.9%) in the ...
