Energy Technologies and CO2 Management Symposium: Session IV
Sponsored by: TMS Extraction and Processing Division, TMS: Energy Committee
Program Organizers: Xiaobo Chen, RMIT University; Yu Lin Zhong, Griffith University; Lei Zhang, University of Alaska Fairbanks; John Howarter, Purdue University; Alafara Baba, University of Ilorin; Neale Neelameggham, IND LLC; Cong Wang, Northeastern University; Ziqi Sun, Queensland University of Technology

Tuesday 2:00 PM
February 25, 2020
Room: 17A
Location: San Diego Convention Ctr

Session Chair: Ziqi Sun, Queensland University of Technology; Xiaobo Chen, RMIT University


2:00 PM  Invited
Low Dimensional Nanomaterials and their Hybrids: Theoretical Study: Ting Liao1; 1Queensland University of Technology
    Low dimensional nanomaterials have attracted an increasing attention for their unique properties which cannot be obtained from the corresponding bulk forms, such as super-high chemically reactive surfaces, rapid “in-plane” charge transport, significant quantum-confinement effect, etc. In this presentation, low dimensional nanomaterials and their hybrids supported on 2D nanosheet has been studied by DFT-based theoretical calculations, with the aim of understanding the nature and mechanisms of their interfacial electronic coupling, charge transfer, and resultant optical response and catalytic activity in hydrogen evolution reactions (HER), oxygen evolution reactions (OER), and dissociative adsorption reaction of small molecules. Low dimensional nanomaterials and their hybrids, which promote interfacial coupling and efficient charge separation arise from the effects of adsorbent nature, quantum size engineering, and defect assistance, are therefore boost their promising applications in photovoltaics and photocatalysis.

2:25 PM  Cancelled
Multifunctional Ga-containing Binary Conversion Coatings on Mg Alloys for Biomedical Applications: Mingshi Song1; Xiaobo Chen1; Ivan Cole1; 1RMIT University
    Magnesium and its alloys are promising materials for biomedical applications owing to their desirable features. However, their clinical applications are significantly restricted by the rapid and uncontrollable degradation progress. In particular, it is of great significance to prevent the implant-related infections. This study aims to develop a series of gallium-strontium phosphate coatings to provide additional antibacterial properties for a single function phosphate coating establishing a binary system. The binary phosphate coatings prepared by adding Ga ions into strontium nitrate and ammonium dihydrogen phosphate mixture are produced at 80 °C. Surface morphology of the coatings determine the degradation rate of underlying Mg parts. Bioactivity and antibacterial properties of bare and coated Mg pieces were also studied through in vitro cell and bacteria culture tests. The present study suggests that Ga containing conversion coating is a promising option for providing both corrosion protection and antibacterial function upon biomedical Mg components.

2:45 PM  Cancelled
Applying Biochar Composite Briquette for Energy Saving in Blast Furnace Ironmaking: Huiqing Tang1; 1University of Science and Technology Beijing
    In this research, iron oxide-carbon composite briquette was prepared using ultrafine iron oxide fine (Size=2.0 um), biochar fines (Size=200.0 um) by heat treatment using. reduction behavior and reduction kinetics of the briquette under simulated blast furnace atmosphere were investigated. Result showed that the briquette had a good anti-pulverization capability under the BF environment. The reduction of iron oxide in the briquette could proceed much faster than the conventional BF burden. Therefore, by lowering the thermal reserve zone in the BF, the briquette could be applied in BF to improve the performance and reducing the CO2 emission in the BF ironmaking.

3:05 PM  Cancelled
Properties and Microstructure of Copper and/or Nickel Supported on GO, rGO and NGO: Xiangyong Lv1; Guangfen Liang1; Yandong Li2; Huamei Duan1; Dengfu Chen1; Mujun Long1; 1College of Materials Science and Engineering; 2Laboratory of Extraordinary Bond Engineering and Advanced Materials Technology
    The modified Hummers method is used to prepare graphite oxide (GO). Then reduced graphene oxide (rGO) and modified graphite oxide (NGO) are prepared by ascorbic acid reduction and ammonia solution modification, respectively. With GO, rGO and NGO as the support, Cu or Ni mono-metal and Cu-Ni bi-metals are support as M-GO, M-rGO and M-NGO (M: Cu, Ni and Cu-Ni) respectively. FTIR, XPS and TEM are used to analyze the properties and microstructure of the resulting composites. Up to 60% of Cu2+ can be reduced, and copper grains are evenly dispersed on the support. Cu2+ reduction can be promoted by support reduction, ammonia modification and nickel addition. The reduction degree of copper is related to the size of copper crystal.

3:25 PM  Cancelled
Investigation of H2 Addition Effects on CO/CO2/H2-air Flames by a Combustion Diagnostic System Based on TDLAS: Yu Liu1; Jingsong Wang1; Haibin Zuo1; Qingguo Xue1; 1University of Science and Technology Beijing
    In this study, a novel combustion diagnostic system based on tunable diode laser absorption spectroscopy (TDLAS) is developed to measure the temperature in flames on a turbulent partly premixed burner. This system simulates harsh industrial combustion environment and enables in situ measurements of non-uniform temperature distributions in CO/CO2/H2-air flames. The effects of H2 addition (0, 4%, and 8%, v/v) in CO/CO2 gas flow on multi gas flames are investigated by this system. Two tunable continuous-waves near 1996 and 2004 nm are employed as the light sources of laser. The flame temperature distributions at several different locations along the axial direction at the burner centerline are reported. The results of measurements are also performed to describe the effects of H2 addition on flame lengths and stability.