liquefaction pathways of bituminous subbituminous coals andtheir
liquefaction pathways of bituminous subbituminous coals andtheir liquefaction pathways of bituminous subbituminous coals andtheir
I * I . I , , . , . , A b s 0 r b a n C e A b S O r b a n C e 2w 1W w PPM A Figure 1. CPMAS 13C NMR spectra b of the coal a) raw, b) vacuum-dried at s loO°C, dried in air at 100°C for c) 2 h, 0 d) 20 h, e) 100 h, and 9 dried at 150°C I; for 20 h. a n C e t I I I I I I 4000 3500 3000 2500 ,2000 1500 1000 . Wavenumbers 4000 3500 3000 2500 2000 1500 1000 Wavenumbers 4 I I I I I I 10 3500 3000 2500 2000 1500 1000 Wavenumbers Figure 2. FlTR difference spectra for the residues from thermal liquefactions in a) solvent-free, b) tetrah, and c) 1-methylnaphthalene runs for the rilw and air-dried (AD) coal. 606
A b S 0 r b a n C e A b s 0 r b a n C e A b s 0 r b a n C e 4000 3500 3000 2500 2000 1500 1000 Wavenumbers 4000 3500 3000 2500 2000 1500 1000 Wavenumbers 607 Figure 3. FTlR difference spectra between the residues from the thermal and catalytic a) solvent-free, b) tetralin and 1-methylnaphthalene runs for the raw, vacuum-dried (VD) and air-dried (AD) coal.
- Page 81 and 82: In the past, chemical treatments in
- Page 83 and 84: The effect of Corn20 preaatment on
- Page 85 and 86: Reaction Time Figure 1 - Schematic
- Page 87 and 88: DISSOLUTION OF THE ARGONNE PREMIUM
- Page 89 and 90: A much more def~tive trend is seen
- Page 91 and 92: EFFECT OF CHLOROBENZENE TREATMENT O
- Page 93 and 94: same conditions and an extraction t
- Page 95 and 96: ACKNOWLEDGEMENT The authors thank t
- Page 97 and 98: THE STRUCTURAL &=RATION OF HUMINlTE
- Page 99 and 100: to be originally derived from demet
- Page 101 and 102: 145 30 I --/---Jh I , , I I , 250 2
- Page 103 and 104: THE EFFECTS OF MOISTURE AND CATIONS
- Page 105 and 106: 1 for the Zap lignite. These result
- Page 107 and 108: content of the samples ion-exchange
- Page 109 and 110: Table 1. F'yrolysis Results of Vacu
- Page 111 and 112: 585 I
- Page 113 and 114: EFFECT OF TEMPERATURE, SAMPLE SI2E
- Page 115 and 116: of some of the thermobalance runs.
- Page 117 and 118: 2. The mechanism of drying is a uni
- Page 119 and 120: Influence of Drying and Oxidation 0
- Page 121 and 122: "c gives W conversion mpared to the
- Page 123 and 124: Table 1. Products dismbutions (dmmf
- Page 125 and 126: - 50 45 40 E 35 2 30 E T) 25 ap 20
- Page 127 and 128: Influence of Drying and Oxidation o
- Page 129 and 130: FTIR . . of the L m To investigate
- Page 131: CONCLUSIONS The characexizntion of
- Page 135 and 136: An NMR Investigation of the Effd of
- Page 137 and 138: for determining the area of the pea
- Page 139 and 140: of the ronl roniponcnte nnd (2) the
- Page 141 and 142: 2w 180 160 9 140 120 P loo f 80 P O
- Page 143 and 144: 25 I 20 ' + 0 Drying lime, hours Fi
- Page 145 and 146: substructure have been identified a
- Page 147 and 148: Pyridine extraction showed that 60
- Page 149 and 150: Figure 1. Reflected white-light pho
- Page 151 and 152: Table 3. Pyridine Extraction Sample
- Page 153 and 154: A bang-bang control strategy was us
- Page 155 and 156: increased from 120°C to 135”C, r
- Page 157 and 158: * wt% based on the amount of naphth
- Page 159 and 160: Use of Biocatalysts for the Solubil
- Page 161 and 162: Results Enzyme Modification with Di
- Page 163 and 164: Conclusions Reducing enzymes can be
- Page 165 and 166: Dynamics of the Extract Molecular-W
- Page 167 and 168: where yi = (x-xi !/pi. The zero mom
- Page 169 and 170: satisfactory agreement between theo
- Page 171 and 172: 0.8 0.6 0.4 0.2 “E \ bo Y, - 1 0
- Page 173 and 174: The Use of Solid State C-13 NMR Spe
- Page 175 and 176: differences lie in the fact that th
- Page 177 and 178: I- z W 0 K W n PROTONATED AROMATIC
- Page 179 and 180: ZAP WIO SIDE CHAINS IN PYRIDINE EXT
- Page 181 and 182: ORGAFlIC VOLATILE MATER AND ITS SUL
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s<br />
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4000 3500 3000 2500 2000 1500 1000<br />
Wavenumbers<br />
4000 3500 3000 2500 2000 1500 1000<br />
Wavenumbers<br />
607<br />
Figure 3. FTlR difference spectra<br />
between the residues from the thermal<br />
and catalytic a) solvent-free, b) tetralin<br />
and 1-methylnaphthalene runs for<br />
the raw, vacuum-dried (VD) and<br />
air-dried (AD) coal.
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