Effect of Catalysts on the Yields of Light Components and Phenols Derived from Shenmu Coal Low Temperature Pyrolysis
| Autor: | Dingchao Liu, Dexiang Zhang, Peng Liu, Jiawei Le, Tieying Pan, Xilan Lu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
business.industry
020209 energy General Chemical Engineering Energy Engineering and Power Technology Tar chemistry.chemical_element 02 engineering and technology Fluid catalytic cracking complex mixtures Catalysis chemistry.chemical_compound Fuel Technology chemistry otorhinolaryngologic diseases 0202 electrical engineering electronic engineering information engineering Organic chemistry Phenol Coal business Zeolite Pyrolysis Carbon Nuclear chemistry |
| Zdroj: | Energy & Fuels. 31:7033-7041 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/acs.energyfuels.7b01072 |
| Popis: | The pyrolysis of Shenmu coal with three physically mixed additives (USY zeolite, CaO, K2CO3) was studied in a quartz tube reactor at a heating rate of 5 °C/min from room temperature to 600 °C for 15 min. Adding all three additives significantly increases the fraction of light components in tar while decreasing the total tar yield. The yield of light components in the tar had the highest increase from 9.5 to 11.1 wt % on daf coal by adding 1 wt % USY zeolite. The GC/MS analysis of the tar shows that the contents of both phenol and alkyl-phenols have the largest increase with the addition of USY zeolite. The 13C NMR analysis of chars indicates that the increase of total phenol content in the tar is attributed to the catalytic cracking of aromatic oxygen carbon in coal structure. The cracking effect of USY produced more CHx radicals that lead to the alkylation of phenols in tar to form more alkyl-phenols and the formation of C1–C4 hydrocarbons to release. The effect on formation of phenols followed the order... |
| Databáze: | OpenAIRE |
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