Related by context. Frequent words. (Click for all words.) 60 syngas 60 biobutanol 59 coal liquefaction 58 butanol 58 coal gasification 57 synthetic fuels 57 pyrolysis 57 Gasification 55 gasification 54 supercritical 54 gasifier 53 hydrogen 53 hydrogenation 53 biodiesel 52 integrated gasification 52 PEM fuel 52 liquid fuels 51 Rentech 51 bio ethanol 51 feedstocks 50 desulfurization 50 Syntroleum 50 cellulosic 50 biofuel 50 hydrometallurgical 50 amine 49 IGCC 49 catalysis 49 cellulosic biomass 48 proton exchange 48 propylene oxide 48 molten salt 48 bio diesel 47 bioethanol 47 electrochemical 47 biomass 47 feedstock 47 chlorine dioxide 47 underground coal gasification 47 biomass gasification 47 anaerobic digestion 47 Cellulosic ethanol 47 cellulosic ethanol 47 UOP 47 vitrification 47 SOFC 46 hydrocarbon fuels 46 camelina 46 anaerobic digesters 46 silane 46 biorefinery 46 biofuels 46 formic acid 46 electrolysis 46 glycerol 46 organic solvents 46 environmentally benign 46 biomethane 45 methanol 45 algal 45 bioremediation 45 biobased 45 diesel particulate filter 45 cellulose 45 flue gas 45 Camelina 45 nuclear fission 45 MOX fuel 45 heap leaching 45 biogas 44 UCG 44 thorium 44 IdaTech 44 alternative fuels 44 fermentation 44 Catalysis 44 MMgy 44 lignite coal 44 EOR 44 synfuel 44 Thorium 43 cleaner burning 43 internal combustion engines 43 sulfur 43 ethanol 43 combustion 43 Coskata 43 carbon capture 43 solvents 43 woody biomass 43 bio fuels 43 EERC 43 sintering 43 glycol 43 Methanol 43 hydrolysis 43 Biofuel 43 fluorine 43 rotary engine 43 pulverized coal 43 PBMR