ligno cellulose in ionic liquids

lipase catalyzed sugar esters synthesis in ionic liquids

Ngày tải lên : 29/07/2015, 03:24

... enhancing lipase activity in the synthesis of sugar ester using ionic liquids was investigated In the lipase-catalyzed esterifications of glucose with vinyl laurate or lauric acid in [Bmim][TfO], 2.4 ... 提出함 仁荷大學校大學院生物工學科 NGUYEN MINH HIEP LIPASE-CATALYZED SUGAR ESTERS SYNTHESIS IN IONIC LIQUIDS By NGUYEN MINH HIEP A THESIS submitted to the faculty of INHA UNIVERSITY In partial fulfillment of ... SCIENCE Department of Marine Science and Biological Engineering February 2009 TRƯỜNG ĐẠI HỌC KỸ THUẬT INHA Luận văn thạc sĩ NGUYỄN MINH HIỆP TỔNG HỢP SUGAR ESTERS TRONG IONIC LIQUIDS DƯỚI SỰ XÚC TÁC...

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IONIC LIQUIDS IN BIOTRANSFORMATIONS AND ORGANOCATALYSIS pptx

Ngày tải lên : 22/03/2014, 09:20

... tris(hydroxymethyl)aminoethane INTRODUCTION Ionic liquids (ILs) are organic salts remaining as liquids under ambient temperatures Since the rst reports on performing biotransformations in ILs,1,2 interests in using 18 IONIC ... Ammonium Ionic Liquids Other Abbreviations 2.1 Introduction 2.2 Ionic Liquids, Water, and Proteins 2.2.1 Ionic Nature of Ionic Liquids 2.2.2 Protic and Aprotic Ionic Liquids 2.2.3 Water Present in ... only in presenting the highest enzyme activity but also in stabilizing the protein against unfolding at high temperatures and in promoting protein renaturation upon cooling 2.2.3 Water Present in...

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ionic liquids in synthesis

Ngày tải lên : 09/05/2014, 17:05

... Reactions in Ionic Liquids 339 Whole-cell Systems and Enzymes other than Lipases in Ionic Liquids 339 Lipases in Ionic Liquids 342 Conclusions and Outlook 345 Outlook 348 Index 356 Ionic Liquids in ... publications concerning ionic liquids as a function of time, as determined using SciFinder Preface Robin’s response is insightful It reflects, in part, the burgeoning growth of papers in this area ... disagreements in the literature (mainly concerning the physicochemical data of some tetrafluoroborate ionic liquids) may have their origins in differing amounts of alkali cation impurities in the ionic liquids...

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APPLICATIONS OF IONIC LIQUIDS IN SCIENCE AND TECHNOLOGY ppt

Ngày tải lên : 29/06/2014, 09:20

... (Vidinha, Lourenco, Nunes, Duarte, and Barreiros) Similarly, ionic liquids are finding increasing use in the popular area of nanomaterials Much of this effort is directed toward using ionic liquids ... lignin content in order to take advantage of the stored energy in lignocellulosic cellulose The problems of dissolving cellulose or reducing the lignin content have to be overcome Ionic liquids ... ranging from to 60 The fructosyl units are linked by (21) Ionic Liquids in Catalytic Biomass Transformation 19 linkages with the glucose as the terminating unit of the polymer chain [38] Inulins...

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IONIC LIQUIDS FOR CELLULOSE PROCESSING AND CARBON CAPTURE FROM FIRST PRINCIPLES CALCULATIONS TO ATOMISTIC SIMULATIONS

Ngày tải lên : 09/09/2015, 11:17

... Mechanistic Insights into Cellulose Dissolution in Ionic Liquids 41 4.1 Introduction 41 4.2 Simulation Models and Methods 42 4.2.1 Cellulose Crystal .42 4.2.2 Ionic Liquids ... between cellulose chains in cellulose/ [BMIM][Ac]/water mixtures at 0, 20, 50, and 80 wt% water 63 Figure 5.8 Numbers of (a) intra-chain and (b) inter-chain H-bonds between cellulose chains ... (dissolve/regenerate) cellulose for its widespread utilization Intra-chain H-bond Inter-chain H-bond Lignocellulosic Biomass Cellulose micro fibrils Figure 1.5 Cellulose network in plant biomass To...

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Synthesis of ionic liquids and their applications in capillary electrophoresis

Ngày tải lên : 17/09/2015, 17:19

... with running buffer and the sample is introduced by dipping one end into the sample and applying an electric field (electrokinetic injection) or by applying gas pressure (hydrodynamic injection) ... solved by coupling CE with MS The main difficulty of coupling CE with MS lies in the fact that the MS system operating under high vacuum and interfacing to CE can reduce hydrodynamic flow in the capillary ... main advantages of CZE over conventional chromatography is that it minimizes or eliminates most sources of band broadening that occur in the later; indeed, broadening is 6-10 times higher in...

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ELECTROCHEMICAL ASPECTS OF IONIC LIQUIDS ppt

Ngày tải lên : 22/03/2014, 09:20

... used in some ionic liquids 3.4.1 Chloroaluminate Systems In case of chloroaluminate ionic liquids, the potential of an aluminum electrode immersed in the acidic ionic liquids that contain AlCl3 ... electrodes in nonchloroaluminate ionic liquids especially for the N(CF3SO2 )− ionic liquids Platinum wire is used for the electrode and immersed in an ionic liquid that contains iodine and an ... LIQUIDS Hiroyuki Ohno 1.1 IONIC LIQUIDS Ionic liquids are salts with a very low melting temperature Ionic liquids have been of great interest recently because of their unusual properties as liquids...

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IONIC LIQUIDS - NEW ASPECTS FOR THE FUTURE pdf

Ngày tải lên : 23/03/2014, 03:20

... explain the dynamical properties on ILs based on MD simulation results taking into consideration mainly following points: how can cross-correlated ionic motions in ILs be modified by interionic ... F., & Shirota, H (2007) Intermolecular Dynamics, Inter actions, and Solvation in Ionic Liquids Acc Chem Res., 40, 1217-1227 [4] Weingaertner, H (2007) Understanding ionic liquids at the molecular ... and engineering Increasing attention has also been paid to the use of ionic liquids in the research fields of biological aspects and natural resources This book provides the forum for dissemination...

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ionic liquids

Ngày tải lên : 02/04/2014, 16:36

... Biocatalysis with Ionic Liquids 657 Conclusions and Outlook 658 Industrial Applications of Ionic Liquids 663 Matthias Maase Ionic Liquids in Industrial Processes: Re-invention of the Wheel or True Innovation? ... Stable are Ionic Liquids? 682 Are Ionic Liquids Toxic? 683 Are Ionic Liquids Green? 684 How Can Ionic Liquids be Recycled ? 684 How Can Ionic Liquids be Disposed Of? 685 Which is the Right Ionic Liquid? ... determined either using Karl–Fischer titration, or a less precise determination may be carried out using IR spectroscopy 2.1.5 Improving the Sustainability of Ionic Liquids As the interest in ionic...

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Chất lỏng ion (ionic liquids), tính chất, tổng hợp và ứng dụng.

Ngày tải lên : 11/06/2014, 23:50

... about Ionic Liquids (ILs) in Green Chemistry Prepared: Huynh Thanh Dien Ionic Liquids in Green Chemistry    What are Ionic liquids (ILs)? Why consider of ILs? The characteristic properties of ionic ... temperature ionic liquids (RTIL) are salts which are already liquid below room temperature Variations in cations and anions can produce literally millions of ionic liquids, including chiral, fluorinated, ... simple halides which inflect high melting points, to inorganic anions such as: Anions: Comparison of organic solvents with ionic liquids REFERENCES Further information regarding physical properties,...

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IONIC LIQUIDS – CLASSES AND PROPERTIES pot

Ngày tải lên : 29/06/2014, 09:20

... conducted in 1,2,3-triazolium ionic liquids at room temperature in the prescence of DABCO Interestingly the reaction furnished improved yields within shorter reaction time in the triazolium ionic liquids ... imidazolium ionic liquids (Jeong and Ryu 2010) 4.1 Application of 1,2,3-triazolium ionic liquids in catalyst tagging So far, the major field of application for 1,2,3-triazolium ionic liquids is in ionic ... Applications in Synthesis 237 Chapter 11 Ionic Liquids Recycling for Reuse Samir I Abu-Eishah 239 Chapter 12 Ionic Liquids in Green Carbonate Synthesis 273 Jianmin Sun, Ruixia Liu, Shin-ichiro Fujita...

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IONIC LIQUIDS: APPLICATIONS AND PERSPECTIVES ppt

Ngày tải lên : 29/06/2014, 13:20

... alkylchloroaluminate(III) ionic liquids and buffered chloroaluminate(III) ionic liquids (Chauvin et al 1990; Ellis et al 1999) Attempts to bring the benefits of ionic liquid technology by drawing on the inherent ... 47 Guo Liying Chapter Selective Breakdown of (Ligno) cellulose in Ionic Liquids Haibo Xie and Zongbao K Zhao 61 Chapter Chemical Modification of Cellulose with Succinic Anhydride in Ionic Liquid ... 4 Ionic Liquids: Applications and Perspectives The use of ionic liquids in polymer science is not limited to their application as solvents Ionic liquids are also used as additives, including...

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Sơ chế sinh khối bằng chất lỏng ion (Ionic liquids) -P2 pot

Ngày tải lên : 08/07/2014, 12:21

... liệu sinh học kết tinh cellulose vách tế bào sinh khối lignocellulose nguyên nhân gây khó khăn xử lý sinh khối Các men thủy phân cellulose vô định hình tạo đường đơn dễ dàng Nhưng với cellulose ... 1-Fu, S., L A Lucia, “Investigation of the Chemical Basis for Ineffi cient Lignin Removal in Softwood Kraft Pulp During Oxygen Delignifi cation,” Industrial and Engineering Chemistry Research, ... lignocellulose giảm thiểu nhiều Sơ đồ chuyển hóa cellulose thành đường đơn sử dụng dung môi muối lỏng men cellulase biểu diễn hình Các báo cáo sơ chế sinh khối sử dụng muối lỏng để hòa tan sinh...

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Sơ chế sinh khối bằng chất lỏng ion (Ionic liquids) -P1 ppsx

Ngày tải lên : 08/07/2014, 12:21

... Sinh khối lignocellulose nguồn carbon tái sinh dồi bậc hành tinh Chỉ tính riêng Mỹ thôi, người ta dự đoán có tỷ sinh khối tạo hàng năm Sinh khối lignocellulose có nguồn gốc ... gỗ, rơm rạ, lõi bắp, chất thải rắn hữu sinh hoạt, phân nguồn khác Tường tế bào sinh khối lignocellulose cấu trúc phức hợp chứa cellulose, hemicellulose lignin ( Hình 2) Các phức hợp khó bị phá ... đến sản xuất nhiên liệu sinh học từ sinh khối ligno- cellulose công nghệ sơ chế sinh khối phải hiệu có chí phí phù hợp Người ta ước tính gallon sản phẩm , việc sơ chế sinh khối ngốn 19 – 22% chi...

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Báo cáo vật lý: "Protonation and Complexation Approaches for Production of Protic Eutectic Ionic Liquids" ppsx

Ngày tải lên : 07/08/2014, 14:20

... –60°C to 450ºC with a cooling and heating rate of 10°C/min to obtain the melting point, Tm, which was determined from the DSC thermograms during the programmed reheating steps The temperatures ... calorimetric data were obtained by heating and cooling the hydrochloride salts sample as shown in Table Each melting point of the DSC traces represents a crystalline melting point for the hydrochloride ... Room-temperature ionic liquids: Solvents for synthesis and catalysis Chem Rev., 99, 2071–2084 Wasserscheid, P & Welton, T (2003) Ionic liquids in synthesis Weinheim: Wiley-VCH Welton T (2004) Ionic liquids in...

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cơ chế sinh khối bằng chất lỏng ion (ionic liquids)

Ngày tải lên : 11/11/2014, 12:58

... nhiên liệu sinh học thương mại hóa? Sinh khối lignocellulose nguồn carbon tái sinh dồi bậc hành tinh Chỉ tính riêng Mỹ thôi, người ta dự đoán có tỷ sinh khối tạo hàng năm Sinh khối lignocellulose ... liệu sinh học kết tinh cellulose vách tế bào sinh khối lignocellulose nguyên nhân gây khó khăn xử lý sinh khối Các men thủy phân cellulose vô định hình tạo đường đơn dễ dàng Nhưng với cellulose ... 1-Fu, S., L A Lucia, “Investigation of the Chemical Basis for Ineffi cient Lignin Removal in Softwood Kraft Pulp During Oxygen Delignifi cation,” Industrial and Engineering Chemistry Research,...

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Ionic Liquids Theory, Properties, New Approaches

Ngày tải lên : 09/04/2015, 17:27

... Alkyl Pyridinium Bromide Ionic Liquids determined by Adibatic Calorimetry and Thermal Analysis 3.1 Introduction Ionic liquids are attracting increasing attention in many fields including organic ... Chapter Peculiarities of Intramolecular Motions in Ionic Liquids Alexander I Kokorin Chapter Atom Substitution Effects in Ionic Liquids: A Microscopic View by Femtosecond Raman-Induced Kerr Effect ... Supramolecular Structures in the Presence of Ionic Liquids 427 Xinghai Shen, Qingde Chen, Jingjing Zhang and Pei Fu Chapter 20 Formation of Complexes in RTIL and Ion Separations 483 Konstantin Popov, Andrei...

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Chương 2 Cấu tạo và tính chất của ligno Cellulose

Ngày tải lên : 16/05/2015, 18:33

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Droplet microfluidics with ionic liquids for chemical analysis and separations

Ngày tải lên : 10/09/2015, 09:08

... bi-compartmental compound droplets flowing in continuous phase (fluorinated oil, FO) (b) A schematic illustrating increase in fluorescence intensity within the ionic liquid compartment of a compound ... viscosities are mixed in a droplet the internal recirculating motions are increased further (Figure 1.6d-f).53 An inert liquid can be inserted within reactant streams prior to merging in a single droplet ... mixing not only in dispersed fluid but also in the carrier fluid segments Based on this effect, gas bubbles are introduced in the liquid flow and initiated internal recirculating motions within...

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Solvation forces and contact mechanics at the nanometer scale in molecular liquids

Ngày tải lên : 12/09/2015, 08:20

... more recently in scanning probe microscopy (SPM) studies of electron transport in single molecule experiments undertaken in liquids [18] Further complexity in force interaction in liquid arises ... melting temperature, indicating some orienting influence due to the metal surface Deryagin and his group [25] showed about a ten fold increase in viscosity of an oil drop near a solid surface in ... and damping [64] of the confined liquid to be found A marked increase in damping of the tip near the surface was found and linked to the increase in the effective viscosity of the confined liquid...

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