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Sustainable Solvents

Sustainable Solvents

James H Clark | Andrew Hunt | Corrado Topi | Giulia Paggiola | James Sherwood

(2017)

Abstract

Solvents are ubiquitous throughout the chemical industry and are found in many consumer products. As a result, interest in solvents and their environmental impact has been steadily increasing. However, in order to achieve maximum integration of new green solvents into the relevant chemical sectors, clarification of the social, economic, and environmental implications of solvent substitution are needed. This book explores the solvent life cycle, highlighting the challenges faced at various points, from production, through the supply-chain and downstream use to end-of-life treatment. It also discusses the potential benefits that a green chemistry and bio-based economy approach could bring. The current state-of-the-art of green solvents is evaluated along these lines, in addition to reviewing their applications with an appreciation of sustainability criteria. Providing a critical assessment on emerging solvents and featuring case studies and perspectives from different sectors, this is an important reference for academics and industrialists working with solvents, as well as policy-makers involved in bio-based initiatives.

James H Clark is Professor of Chemistry and Director of the Green Chemistry Centre of Excellence, The University of York, UK. He has led the green chemistry movement in Europe for the last 15 years and was the first scientific editor of the journal Green Chemistry and is Editor-in-chief of the RSC Green Chemistry book series.

Andrew J. Hunt is the Scientific Leader of the alternative solvent technology platform at the Green Chemistry Centre of Excellence, the University of York, UK. His research interests include elemental sustainability, solvents, supercritical fluids, waste utilisation and biorefineries.

James Sherwood is a Research Associate at the University of York, UK, where he works at the Green Chemistry Centre of Excellence. In addition to his work on solvent effects in organic synthesis, he is now conducting research on sustainability assessments for bio-based products.

Corrado Topi is a Senior Research Fellow at the Stockholm Environment Institute Research Centre at the University of York, UK, where he focuses on sustainability, resilience and change in a context of integrated social, economic and environmental systems.

Giulia Paggiola is a Scientist within the Green Chemistry team at GlaxoSmithKline, UK. Prior to this, she was investigating the applicability of green solvents in biocatalysed processes and studied the potential for their uptake in the pharmaceutical industry.


Table of Contents

Section Title Page Action Price
Cover Cover
Sustainable Solvents: Perspectives from Research, Business and International Policy i
Preface vii
Contents ix
Chapter 1 - Introduction to Solvents and Sustainable Chemistry 1
1.1 Sustainable Solutions 1
1.2 Solvents 2
1.2.1 Definition 2
1.2.2 Types of Solvent and Their Origins 3
1.2.3 Solvent Markets 5
1.3 The Concept of Sustainability 14
1.3.1 Overarching Definitions 14
1.3.2 Sustainable Chemistry 20
1.3.3 Relevance of Sustainability to Solvents 26
References 28
Chapter 2 - Modern Trends in Solvent Use 35
2.1 Policies, Regulation and Opportunities Influencing Solvent Use 35
2.1.1 Push: Regulation 35
2.1.2 Pull: Green Solvents 39
2.2 Pharmaceuticals 40
2.2.1 Reaction Overview and Solvent Use in the Pharmaceutical Sector 41
2.2.2 Acylation of Alcohols and Amines 43
2.2.3 Heteroatom Alkylation 48
2.2.4 Cross-Coupling Reactions 49
2.2.5 Heterocycle Synthesis 50
2.2.6 Peptide Synthesis 55
2.2.7 Purity of Solvents and Products 56
2.3 Process Research and Development for Fine Chemicals 57
2.4 Polymers 57
2.5 Paints and Coatings 68
2.6 Construction Materials 69
2.7 Materials for Energy Applications 69
2.7.1 Lithium Ion Batteries 70
2.7.2 Solar Cells and Organic Electronic Devices 70
2.8 Graphene 71
2.9 Biomass, Natural Products and Biotechnology 72
2.10 Leather 73
2.11 Dry-Cleaning 74
References 75
Chapter 3 - Sustainability Applied to Solvents 87
3.1 Sustainability Assessment Methods and Approaches 87
3.1.1 Life Cycle Assessment 88
3.1.2 Alternative Tools for Environmental Sustainability Assessments 92
3.1.3 Solvent Assessment Models 95
3.1.3.1 Cumulative Energy Demand of Petrochemical Solvent Production 95
3.1.3.2 Sustainability Indices 100
3.2 Sustainability Standards and Certification 101
3.2.1 Product Certification: RSB 101
3.2.2 Product Certification: ISCC PLUS 103
3.2.3 Product Standardisation: Sustainability Criteria for Bio-Based Products 106
3.2.4 Biomass Certification: Palm Oil 107
3.2.5 Biomass Certification: Sustainable Forestry Products 113
3.2.6 Biomass Certification: Sugar 114
3.3 Published Examples of Sustainable Solvents 115
3.3.1 Colloquial Statements of Solvent Sustainability 116
3.3.2 Solvent Assessment Case Studies 119
3.3.3 Biorefinery Case Studies 124
References 127
Chapter 4 - Alternative Solvents 136
4.1 Types of Bio-Based Solvent 136
4.1.1 Carbohydrate-Derived Solvents Produced Using Biotechnology 137
4.1.2 Carbohydrate-Derived Solvents Produced Using Thermochemical Processes 138
4.1.2.1 Cyrene (Circa Group) 140
4.1.3 Lignin-Derived Solvents 148
4.1.4 Triglyceride-Derived Solvents 148
4.1.5 Terpene-Derived Solvents 149
4.1.6 Amino Acid-Derived Solvents 150
4.1.7 Summary of Commercially Available Bio-Based Solvents 151
4.2 Promotion of Bio-Based Solvents by Standards and Certification 153
4.2.1 European Standard EN 16766 153
4.2.2 Certification and Labelling 158
4.2.2.1 DIN CERTCO 159
4.2.2.2 VINÇOTTE 160
4.2.2.3 USDA 160
4.2.2.4 NEN 160
4.3 Speciality Petrochemical Solvents 161
4.3.1 Case Studies 162
4.3.1.1 TamiSolve NxG (Eastman) 162
4.3.1.2 Omnia: Butyl 3-Hydroxybutyrate (Eastman) 165
4.3.1.3 RhodiaSolv PolarClean: Methyl 5-(dimethylamino)-2-methyl-oxopentanoate (Solvay) 165
4.3.1.4 Academic Developments 166
4.4 Water and Aqueous Solutions 166
4.5 Supercritical Fluids and Their Use in Tuneable Solvents and Switchable Solvents 169
4.6 Ionic Liquids and Deep Eutectic Solvents 171
References 175
Chapter 5 - Green Chemistry Concepts and Metrics for Solvent Selection 188
5.1 Solvents and the Green Chemistry Philosophy 188
5.2 Principles of Green Solvents 192
5.2.1 Production 195
5.2.1.1 Cumulative Energy Demand of Bio-Based Solvent Production 199
5.2.2 Availability 201
5.2.3 Application 203
5.2.4 Toxicity 204
5.2.5 Safety 205
5.2.6 End-of-Life 206
5.2.6.1 A Solvent Waste Hierarchy 209
5.3 Solvent Selection 212
5.3.1 Performance Basis 212
5.3.1.1 Solvent Selection Tables Based on Conditions and Results 213
5.3.1.2 Linear Solvation Energy Relationships 216
5.3.2 Green Characteristics 220
5.3.2.1 CHEM21 Selection Guide of Classical-Solvents and Less Classical-Solvents 220
5.4 Computational Solvent Design 225
References 227
Chapter 6 - An Appendix of Solvent Data Sheets 235
6.1 Bio-Based Solvent Data Sheets 235
6.1.1 Acetic acid 244
6.1.2 Acetone 246
6.1.3 1,4-Butanediol 248
6.1.4 1-Butanol 250
6.1.5 t-Butyl Ethyl Ether 252
6.1.6 Carbon Dioxide 254
6.1.7 p-Cymene 255
6.1.8 Diethoxymethane 257
6.1.9 Dihydrolevoglucosenone 259
6.1.10 N,N-Dimethyl dec-9-enamide 260
6.1.11 2,2-Dimethyl-1,3-dioxolan-4-yl methanol 262
6.1.12 Dimethyl Isosorbide 264
6.1.13 N,N-Dimethyl Lactamide 266
6.1.14 Dimethyl Sulphoxide 267
6.1.15 1,6,10-Dodecatriene, 7,11-Dimethyl-3-methylene-, (6E)-, Hydrogenated 269
6.1.16 Ethanol 271
6.1.17 Ethyl Acetate 273
6.1.18 Ethyl Lactate 275
6.1.19 Ethyl Laurate 277
6.1.20 Ethylene Glycol 279
6.1.21 2-Ethylhexyl Lactate 281
6.1.22 Glycerol 283
6.1.23 Glycerol Formal 285
6.1.24 Isoamyl Alcohol 287
6.1.25 Isobutanol 289
6.1.26 Lactic Acid 291
6.1.27 d-Limonene 293
6.1.28 Methanol 294
6.1.29 Methyl Soyate 296
6.1.30 2-Methyltetrahydrofuran 298
6.1.31 2-Octanol 300
6.1.32 1,2-Pentanediol 302
6.1.33 1,2-Propanediol 304
6.1.34 1,3-Propanediol 306
6.1.35 Tetrahydrofuran 308
6.1.36 Tetrahydrofurfuryl Alcohol 310
6.1.37 Triacetin 312
6.1.38 Turpentine Oil 314
6.1.39 γ-Valerolactone 315
6.1.40 p-Xylene 317
6.2 Speciality Petrochemical Solvent Data Sheets 320
6.2.1 t-Amyl Methyl Ether 320
6.2.2 Anisole 321
6.2.3 Benzyl Benzoate 322
6.2.4 Butyl 3-Hydroxybutyrate 323
6.2.5 Cyclopentyl Methyl Ether 324
6.2.6 Dibasic Isopropyl Esters (Adipate) 325
6.2.7 Dibasic Methyl Esters (Adipate) 326
6.2.8 Dibasic Methyl Esters (Glutarate) 327
6.2.9 Dibasic Methyl Esters (Succinate) 328
6.2.10 Dibutyl Ether 329
6.2.11 Diethylene Glycol Monobutyl Ether 330
6.2.12 Dimethyl Carbonate 331
6.2.13 N,N-Dimethyl Decanamide 332
6.2.14 Dimethyl 2-Methylglutarate 333
6.2.15 N,N-Dimethyl Octanamide 334
6.2.16 1,3-Dioxolane 335
6.2.17 Glycol Diacetate 336
6.2.18 Hexamethyldisiloxane 337
6.2.19 Isoamyl Acetate 338
6.2.20 Isobutyl Acetate 339
6.2.21 Methyl 5-(dimethylamino)-2-methyl-5-oxopentanoate 340
6.2.22 1,1,1,3,3-Pentafluorobutane 341
6.2.23 Polydimethylsiloxane 342
6.2.24 Polyethylene Glycol 343
6.2.25 Propylene Carbonate 344
References 344
Subject Index 348