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Low Carbon Footprint Fossil Resource...

Sun, Kaidi.

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Low Carbon Footprint Fossil Resource Utilization.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Low Carbon Footprint Fossil Resource Utilization./
作者:	Sun, Kaidi.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	173 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
Contained By:	Dissertations Abstracts International81-05B.
標題:	Chemical engineering. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=22587455
ISBN:	9781088353431

Low Carbon Footprint Fossil Resource Utilization.
Sun, Kaidi.

Low Carbon Footprint Fossil Resource Utilization. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 173 p.

Source: Dissertations Abstracts International, Volume: 81-05, Section: B.

Thesis (Ph.D.)--University of Wyoming, 2019.

This item must not be sold to any third party vendors.

Coal and coal bed methane are two major fossil resources in the U.S. A common challenge for using coal and coal bed methane as energy resources is their CO2 emission. Thus, conversion of inexpensive coal and coal bed methane to value-added and low carbon footprint materials are of great importance. In this research, after conducting a comprehensive review of synthesizing SiC from coal-based materials, a novel and environmentally friendly method is developed for synthesis of beta-silicon carbide (β-SiC) with the residual of Powder River Basin (PRB) coal extraction with ethanol and supercritical CO2 (EtOH-SCC) for carbon fiber production, and a sandstone from Wyoming. The purity of the β-SiC obtained with the two inexpensive raw materials under Ar atmosphere within 1,300-1,600 °C reaches as high as 98%. The synthesized β-SiC was characterized by using XRD, BET, FTIR, TGA, SEM, TEM, ICP-AES and hardness detector. A possible synthesis mechanism was proposed and confirmed with experimental results. This study provides a clean and low-cost approach to reuse of waste residual from coal utilization and sandstone powder. Also, dehydroaromatization of methane to aromatics was studied and a detailed literature review was carried out. The promoting effect of nano-Fe on Mo/HZSM-5 catalyst in methane dehydroaromatization (MDA) was investigated via a fixed-bed reactor along with an integrated on-line gas chromatography and mass spectrometry unit. The fresh or/and spent MDA catalysts were characterized by ICP-MS, H2-TPR, CH4-TPSR, NH3-TPD, XRD, SEM, TEM, N2 adsorption/desorption, TGA, and DRIFT Spectroscopy. Nano Fe doped Mo/HZSM-5 catalysts prepared with an innovative method can enhance MDA performances of the catalysts. Moreover, the research demonstrates that carbon nanotubes can not only form on Mo/HZSM-5 catalyst without the addition of Fe but also exist on the surface of catalyst for a long time, which is beneficial to clarification of carbon nanotubes formation mechanism. It is concluded that nano Fe plays an important role in promoting the formation and growth of carbon nanotubes, and thus the activity and stability of the MDA catalysts.

ISBN: 9781088353431Subjects--Topical Terms:

560457
Chemical engineering.
Subjects--Index Terms:

Low carbon footprint

Low Carbon Footprint Fossil Resource Utilization.
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500 $a Source: Dissertations Abstracts International, Volume: 81-05, Section: B.
500 $a Advisor: Fan, Maohong;Adidharma, Hertanto .
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520 $a Coal and coal bed methane are two major fossil resources in the U.S. A common challenge for using coal and coal bed methane as energy resources is their CO2 emission. Thus, conversion of inexpensive coal and coal bed methane to value-added and low carbon footprint materials are of great importance. In this research, after conducting a comprehensive review of synthesizing SiC from coal-based materials, a novel and environmentally friendly method is developed for synthesis of beta-silicon carbide (β-SiC) with the residual of Powder River Basin (PRB) coal extraction with ethanol and supercritical CO2 (EtOH-SCC) for carbon fiber production, and a sandstone from Wyoming. The purity of the β-SiC obtained with the two inexpensive raw materials under Ar atmosphere within 1,300-1,600 °C reaches as high as 98%. The synthesized β-SiC was characterized by using XRD, BET, FTIR, TGA, SEM, TEM, ICP-AES and hardness detector. A possible synthesis mechanism was proposed and confirmed with experimental results. This study provides a clean and low-cost approach to reuse of waste residual from coal utilization and sandstone powder. Also, dehydroaromatization of methane to aromatics was studied and a detailed literature review was carried out. The promoting effect of nano-Fe on Mo/HZSM-5 catalyst in methane dehydroaromatization (MDA) was investigated via a fixed-bed reactor along with an integrated on-line gas chromatography and mass spectrometry unit. The fresh or/and spent MDA catalysts were characterized by ICP-MS, H2-TPR, CH4-TPSR, NH3-TPD, XRD, SEM, TEM, N2 adsorption/desorption, TGA, and DRIFT Spectroscopy. Nano Fe doped Mo/HZSM-5 catalysts prepared with an innovative method can enhance MDA performances of the catalysts. Moreover, the research demonstrates that carbon nanotubes can not only form on Mo/HZSM-5 catalyst without the addition of Fe but also exist on the surface of catalyst for a long time, which is beneficial to clarification of carbon nanotubes formation mechanism. It is concluded that nano Fe plays an important role in promoting the formation and growth of carbon nanotubes, and thus the activity and stability of the MDA catalysts.
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