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NMR analysis of cracking products of asphalt and assessment of catalyst performance

Author

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  • Ahmad, Imtiaz
  • Shakirullah, Mohammad
  • ur Rehman, Habib
  • Ishaq, Mohammad
  • Khan, Mohammad Arsala
  • Shah, Amjad Ali

Abstract

This paper reports 13C nuclear magnetic resonance (NMR) analysis of some crackates obtained from asphalt cracking in a micro autoclave under a pool of nitrogen. The cracking was carried out in the presence of Zeolite Socony Mobil #5 (HZSM-5) and locally cheap and readily available clay i.e. Utimanzai Clay (UTIMAC) as catalysts. The crackates obtained in case of each run was analyzed by 13C NMR spectrophotometer using CDCl3 as dissolving solvent and tetramethyl silane (TMS) as internal standard. The 13C NMR data was used to assess the extent of hydrocracking and degree of branching in crackates from asphalt .The results indicate that the cheap local catalyst used has comparable suitability with the conventional expensive catalyst in terms of asphalt cracking and its conversion to light products enriched with bulk n-alkane configurations.

Suggested Citation

  • Ahmad, Imtiaz & Shakirullah, Mohammad & ur Rehman, Habib & Ishaq, Mohammad & Khan, Mohammad Arsala & Shah, Amjad Ali, 2009. "NMR analysis of cracking products of asphalt and assessment of catalyst performance," Energy, Elsevier, vol. 34(2), pages 127-133.
    • Handle: RePEc:eee:energy:v:34:y:2009:i:2:p:127-133
    DOI: 10.1016/j.energy.2008.10.008
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    References listed on IDEAS

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    1. Karthikeyan, R. & Mahalakshmi, N.V., 2007. "Performance and emission characteristics of a turpentine–diesel dual fuel engine," Energy, Elsevier, vol. 32(7), pages 1202-1209.
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    Cited by:

    1. Jiao, Shouhui & Wang, Feng & Wang, Lili & Biney, Bernard Wiafe & Liu, He & Chen, Kun & Guo, Aijun & Sun, Lanyi & Wang, Zongxian, 2022. "Systematic identification and distribution analysis of olefins in FCC slurry oil," Energy, Elsevier, vol. 239(PA).
    2. Sharma, Ajit & Lee, Byeong-Kyu, 2017. "Energy savings and reduction of CO2 emission using Ca(OH)2 incorporated zeolite as an additive for warm and hot mix asphalt production," Energy, Elsevier, vol. 136(C), pages 142-150.
    3. Alejandra T. Calabi-Floody & Gonzalo A. Valdés-Vidal & Elsa Sanchez-Alonso & Luis A. Mardones-Parra, 2020. "Evaluation of Gas Emissions, Energy Consumption and Production Costs of Warm Mix Asphalt (WMA) Involving Natural Zeolite and Reclaimed Asphalt Pavement (RAP)," Sustainability, MDPI, vol. 12(16), pages 1-16, August.

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    Keywords

    Asphalt; Cracking; Clay; HZSM-5; NMR;
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