Search results for: Qingbo Yu

Items from 1 to 20 out of 96 results

article

Numerical study on porosity distribution and analysis of ignition instability in packed beds of spheres

Zhijia Xue, Qingbo Yu, Shanshan Ma, Xinyou Fu

The Canadian Journal of Chemical Engineering > 100 > 7 > 1613 - 1625

Porosity distribution is an important factor that affects premixed flame stability in packed beds. In this paper, the discrete element method is used to simulate the sphere packing in cylindrical, conical, and pyramidal packed beds. The anisotropic characteristics of porosity and ignition temperature distributions in packed beds are calculated and analyzed. The results show that the distance of the...

article

Effects of introducing foreign ion K on the reduction kinetics of oxygen carriers in chemical looping air separation process

Limin Hou, Chaoyue Qiao, Qingbo Yu, Wenfei Wu

Environmental Progress & Sustainable Energy > 41 > 1 > n/a - n/a

In the previous work, YBaCo₄O_7 + δ and Y_0.2Ti_0.05Dy_0.75BaCo₄O_7 + δ monolithic oxygen carriers worked at low temperature, were reported with good reactivity in oxygen absorption and desorption. Oxygen carriers reacted at low temperature can save amount of energy for the chemical looping air separation process. The objective of this work is to explore the detailed effect of new foreign ion K⁺ on reaction...

article

Steam reforming of tar from raw coke oven gas over bifunctional catalysts: Effects of preparation parameters on CO₂ adsorption performance

Weidong Zhang, Huaqing Xie, Panlei Wang, Rongquan Li, more

Environmental Progress & Sustainable Energy > 40 > 2 > n/a - n/a

From the thermodynamic analysis of the steam reforming process of raw coke oven gas, the H₂ amplification factor after the reforming can reach the highest (over 3.5) in the temperature range between 650 and 800°C, where the bifunctional catalysts to be prepared should have the best CO₂ adsorption performances as well as the excellent reforming catalytic performances. In this article, the bifunctional...

article

Steam reforming of tar from raw coke oven gas over bifunctional catalysts: Reforming performance for H₂ production

Weidong Zhang, Huaqing Xie, Zhenyu Yu, Panlei Wang, more

Environmental Progress & Sustainable Energy > 40 > 2 > n/a - n/a

In this article, the bifunctional NiO/CaO@C12A7 catalysts having reforming catalytic effect and CO₂ adsorption effect were prepared with co‐precipitation method, and were used in the sorption‐enhanced steam reforming process of tar from RCOG for hydrogen production. Among six kinds of samples with different load ratios, the catalyst with the CaO:C12A7:NiO ratio of 70:15:15 showed the best catalytic...

article

Behind‐Target Rupturing Effects of Sandwich‐like Plates by Reactive Liner Shaped Charge Jet

Yuanfeng Zheng, Chenghai Su, Huanguo Guo, Qingbo Yu, more

Propellants, Explosives, Pyrotechnics > 44 > 11 > 1400 - 1409

This paper begins with experiments to investigate the behind‐target damage effects on sandwich‐like plates subjected to reactive liner shaped charge jet. Sandwich‐like plates, consisting of triple spaced aluminum plates filled with flame‐retardant foams, are placed under a steel target. The reactive liner shaped charge is initiated at a stand‐off of 1.0 CD, producing a reactive jet to perforate the...

article

Effects of heat treatment on the structure and photocatalytic activity of polymer carbon nitride

Qingbo Yu, Qixiang Xu, Huiqin Li, Kuan Yang, more

Journal of Materials Science > 2019 > 54 > 23 > 14599- 14608

Heat treatment technology is usually used for the processing of metal materials. In this paper, polymer carbon nitride (g-C₃N₄) is secondarily calcined at 590 °C. A series of nitrogen-doped g-C₃N₄ are obtained by adjusting the holding time. The doping of nitrogen atoms changes the electronic structure of the catalyst and narrows the band gap. In addition, the escape of ammonia during the secondary...

article

Production of syngas from dry reforming of bio-oil model compound in granulated blast furnace slag

Xin Yao, Qingbo Yu, Guowei Xu, Zhengri Han, more

Korean Journal of Chemical Engineering > 2019 > 36 > 5 > 722-728

The characterization of dry (CO₂) reforming of bio-oil model compound (BMC) in granulated BF (blast furnace) slag for syngas production is presented in this study. The effects of temperature, CO₂/C (the molar ratio of CO₂ to C in the BMC), liquid hourly space velocity (LHSV) and granulated BF slag on the coke yield, combustible gas yield, syngas composition and lower heating value of the dry reforming...

article

Effects of manganese content and calcination temperature on Mn/Zr-PILM catalyst for low-temperature selective catalytic reduction of NO_x by NH₃ in metallurgical sintering flue gas

Zhicheng Han, Qingbo Yu, Zhaolong Teng, Bin Wu, more

Environmental Science and Pollution Research > 2019 > 26 > 13 > 12920- 12927

The effects of manganese content, carrier calcination temperature, and catalyst calcination temperature of manganese-based zirconium pillared intercalated montmorillonite (Mn/Zr-PILM) catalysts were investigated for low-temperature selective catalytic reduction of NO_x by NH₃ (NH₃-SCR) in the metallurgical sintering flue gas. The physicochemical properties of these catalysts can be characterized by...

article

Practicability study of YBaCo₄O_7+δ and substituted samples for chemical looping air separation process

Limin Hou, Qingbo Yu, Kun Wang, Tianwei Wu, more

Environmental Progress & Sustainable Energy > 38 > 2 > 563 - 569

Chemical looping air separation, producing oxygen, is a non‐traditional and energy efficient process. Oxygen carrier is core of the process. In the article, practicability of YBaCo₄O_7+δ and substituted samples reacting at temperature lower than 500°C as oxygen carriers are studied for a chemical looping air separation process. First, the XRD analysis of synthesized samples was performed to discern...

article

Selection and preparation of CO₂ sorbent for sorption‐enhanced steam reforming process of raw coke oven gas

Huaqing Xie, Qingbo Yu, Han Lu, Liang Ji, more

Environmental Progress & Sustainable Energy > 38 > 1 > 89 - 97

The study on CO₂ sorbent to be used in the sorption‐enhanced steam reforming process of raw coke oven gas (RCOG) was performed via thermodynamic and experimental analysis in this article. From the thermodynamic analysis, CaO showed the highest CO₂ adsorption capacity in the SR reaction temperature zone of RCOG and the best CO₂ desorption efficiency at the higher temperature among eight candidate metal‐oxides,...

article

Nitrogen self-doped high specific surface area graphite carbon nitride for photocatalytic degradating of methylene blue

Qixiang Xu, Guoqing Xu, Qingbo Yu, Kuan Yang, more

Journal of Nanoparticle Research > 2019 > 21 > 11 > 1-13

Self-doped graphite carbon nitride (g-C₃N₄) is a hot topic in the field of photocatalysis. The g-C₃N₄ with nitrogen self-doped and higher specific surface area was obtained via adjusting the temperature of secondary calcination for 550 ° C, 590 ° C, and 625 ° C, which will improve its photocatalytic properties. The sp² hybridized C is replaced by the nitrogen atom. It changes the electronic structure...

article

Sensitivity analysis of key factors in controlling absorption and desorption of oxygen to oxygen carriers

Limin Hou, Qingbo Yu, Kun Wang, Shuo Zhang, more

Korean Journal of Chemical Engineering > 2019 > 36 > 1 > 84-91

Chemical looping air separation gives an oxygen resource for the oxy-fuel combustion system. To investigate the sensitivity of operation parameters and optimal operation parameters, with the consideration of the reactor temperature, we used the oxygen concentration, and reaction gas flow, an orthogonal experiment and multi-objective comprehensive evaluation method to analyze the results obtained by...

article

Oxygen storage capacity of substituted YBaCo₄O_7+δ oxygen carriers

Limin Hou, Qingbo Yu, Kun Wang, Tuo Wang, more

Journal of Thermal Analysis and Calorimetry > 2019 > 137 > 1 > 317-325

Investigations on Ti, Pr, and Dy substitution and Ti co-substitution with La, Ce, Pr, Nd, and Dy in Y site were carried out. The XRD patterns indicate that the solubility limit for Ti is 5%. The solubility limit for Dy is 100%. Impurities will form if the substituting proportion surpasses the solubility limit for the substituting ion. For the phase composition of all co-substitution samples, only...

article

Sorption-enhanced reforming of tar: Influence of the preparation method of CO₂ absorbent

Huaqing Xie, Weidong Zhang, Xiangnan Zhao, Hao Chen, more

Korean Journal of Chemical Engineering > 2018 > 35 > 11 > 2191-2197

To remove tar and produce environment-friendly H₂, one of the promising routes is the sorption-enhanced steam reforming (SESR) process, in which the CO₂ sorbent is a key element. We prepared the CO₂ sorbents with Ca₁₂Al₁₄O₃₃ as carrier with various methods. Their characterizations were examined, and the sample prepared by solgel (SG) method showed the strongest CaO and Ca₁₂Al₁₄O₃₃ phases and the most...

article

Fabrication of manganese-based Zr-Fe polymeric pillared interlayered montmorillonite for low-temperature selective catalytic reduction of NO_x by NH₃ in the metallurgical sintering flue gas

Zhicheng Han, Qingbo Yu, Huaqing Xie, Kaijie Liu, more

Environmental Science and Pollution Research > 2018 > 25 > 32 > 32122- 32129

A series of Zr-Fe (Zr/Fe = 4:0, 3:1, 2:2, 1:3, 0:4) polymeric pillared interlayered montmorillonite loading 10 wt.% MnO_x (Mn/Zr-Fe-PILM) were investigated for the selective catalytic reduction of NO_x by NH₃ (NH₃-SCR) in metallurgical sintering flue gas. The X-ray diffraction (XRD), N₂ adsorption-desorption isotherm, scanning electron microscope (SEM), and ammonia temperature-programmed desorption...

article

Comparative kinetic study of coal gasification with steam and CO₂ in molten blast furnace slags

Fan Yang, Qingbo Yu, Huaqing Xie, Zongliang Zuo, more

Korean Journal of Chemical Engineering > 2018 > 35 > 8 > 1626-1635

To make a comparison between coal gasification in molten blast furnace slag (MBFS) in different ambience and choose an appropriate agent to recover BF slag’s waste heat entirely, coal gasification with steam and CO₂ in molten blast furnace slags was studied by isothermal thermo-gravimetric analysis. The effects of temperature and addition of MBFS were studied. Carbon conversion and reaction rate increased...

article

Thermodynamic analysis on molten slag waste heat cascade recovery method (MS-WHCR)

Zongliang Zuo, Qingbo Yu, Huaqing Xie, Sihong Liu, more

Journal of Thermal Analysis and Calorimetry > 2018 > 134 > 3 > 2171-2181

Thermal energy recovery of pyrometallurgy slags is a worldwide problem that is widely concerned for decades. As chemical recovery method, molten slag cascade recovery method (MS-WHCR) is proposed in this work. As typical endothermic chemical reactions, pyrolysis, gasification, calcination and reforming reactions are applied in this method. Gasification–pyrolysis system, calcination–pyrolysis system,...

article

Thermodynamic modeling of the combined CLG–CLHG system for syngas and hydrogen generation

Kun Wang, Qingbo Yu, Qin Qin, Wenjun Duan

Environmental Progress & Sustainable Energy > 37 > 3 > 1132 - 1139

The combined CLG and CLHG is a novel technology for the co‐generation of syngas and H₂‐riched gas. In CLG process, the reduction of oxygen carrier with biomass can produce syngas. In CLHG process, the oxidation of oxygen carrier with steam can produce H₂‐riched gas. In this study, the Ce‐based oxygen carrier was selected as the candidate material based on the Gibbs free energy changes (ΔG) of the...

article

Oxidation and reduction kinetic of YBaCo₄O_7+δ and substituted oxygen carriers

Limin Hou, Qingbo Yu, Kun Wang, Fan Yang, more

Journal of Thermal Analysis and Calorimetry > 2018 > 134 > 3 > 2213-2221

Kinetic analysis of YBaCo₄O_7+δ, Y_0.95Ti_0.05BaCo₄O_7+δ and Y_0.15Zr_0.1Dy_0.75BaCo₄O_7+δ oxygen carriers for CLAS system has been performed with TG data. The materials are characterized with XRD for phase composition, SEM for particle morphology, and temperature-programmed thermogravimetry for oxidation and reduction reaction analysis. TG experiments are conducted with heating rates of 0.5, 1, and 2 K min...

article

Interfacial liquid–vapor phase change and entropy generation in pool boiling experiment for titanium tetrachloride

Wenhao Wang, Fuzhong Wu, Qingbo Yu, Huixin Jin

Journal of Thermal Analysis and Calorimetry > 2018 > 133 > 3 > 1571-1578

Interfacial temperatures and pressures in liquid and vapor phases near liquid–vapor interfaces in pool boiling experiment for titanium tetrachloride have been measured recently. The interfacial vapor temperature is higher than that of liquid phase. Specific entropy generation rate increases with net boiling flux, as does the temperature discontinuity. Although the discontinuities in the temperatures...

Publication date

Last 3 years (2)

Close

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

From:

To:
Set your own date range

Publication type

article (94)
book (2)

Keywords

Data set

Elsevier (40)
Springer (37)
Wiley (16)
ieee (2)
ACS (1)

Journal

Journal of Thermal Analysis and Calorimetry (17)
International Journal of Hydrogen Energy (13)
Environmental Progress & Sustainable Energy (12)
Applied Thermal Engineering (5)
Korean Journal of Chemical Engineering (5)
Russian Journal of Physical Chemistry A (5)
Energy (4)
Energy Conversion and Management (3)
Environmental Science and Pollution Research (2)
Materials Science & Engineering A (2)
Propellants, Explosives, Pyrotechnics (2)
Adsorption (1)
Applied Surface Science (1)
Chemical Engineering & Technology (1)
Chemical Engineering Journal (1)
Chemical Engineering Science (1)
Chinese Science Bulletin (1)
Construction and Building Materials (1)
Energy & Fuels (1)
Frontiers of Chemistry in China (1)
International Communications in Heat and Mass Transfer (1)
Journal of Electrostatics (1)
Journal of Energy Chemistry (1)
Journal of Loss Prevention in the Process Industries (1)
Journal of Materials Science (1)
Journal of Nanoparticle Research (1)
Journal of the Taiwan Institute of Chemical Engineers (1)
Materials Science and Engineering: C (1)
Polymer (1)
Russian Journal of Non-Ferrous Metals (1)
Science China Life Sciences (1)
Science China Materials (1)
Solid State Sciences (1)
The Canadian Journal of Chemical Engineering (1)
Thermochimica Acta (1)
more

INFONA - science communication portal

Search results for: Qingbo Yu

Numerical study on porosity distribution and analysis of ignition instability in packed beds of spheres

Effects of introducing foreign ion K on the reduction kinetics of oxygen carriers in chemical looping air separation process

Steam reforming of tar from raw coke oven gas over bifunctional catalysts: Effects of preparation parameters on CO₂ adsorption performance

Steam reforming of tar from raw coke oven gas over bifunctional catalysts: Reforming performance for H₂ production

Behind‐Target Rupturing Effects of Sandwich‐like Plates by Reactive Liner Shaped Charge Jet

Effects of heat treatment on the structure and photocatalytic activity of polymer carbon nitride

Production of syngas from dry reforming of bio-oil model compound in granulated blast furnace slag

Effects of manganese content and calcination temperature on Mn/Zr-PILM catalyst for low-temperature selective catalytic reduction of NO_x by NH₃ in metallurgical sintering flue gas

Practicability study of YBaCo₄O_7+δ and substituted samples for chemical looping air separation process

Selection and preparation of CO₂ sorbent for sorption‐enhanced steam reforming process of raw coke oven gas

Nitrogen self-doped high specific surface area graphite carbon nitride for photocatalytic degradating of methylene blue

Sensitivity analysis of key factors in controlling absorption and desorption of oxygen to oxygen carriers

Oxygen storage capacity of substituted YBaCo₄O_7+δ oxygen carriers

Sorption-enhanced reforming of tar: Influence of the preparation method of CO₂ absorbent

Fabrication of manganese-based Zr-Fe polymeric pillared interlayered montmorillonite for low-temperature selective catalytic reduction of NO_x by NH₃ in the metallurgical sintering flue gas

Comparative kinetic study of coal gasification with steam and CO₂ in molten blast furnace slags

Thermodynamic analysis on molten slag waste heat cascade recovery method (MS-WHCR)

Thermodynamic modeling of the combined CLG–CLHG system for syngas and hydrogen generation

Oxidation and reduction kinetic of YBaCo₄O_7+δ and substituted oxygen carriers

Interfacial liquid–vapor phase change and entropy generation in pool boiling experiment for titanium tetrachloride

Filter options

Publication date

Publication type

Keywords

Data set

Journal

INFONA - science communication portal

Search results for: Qingbo Yu

Add recipient

Sending message cancelled

Are you sure you want to cancel sending this message?

Send message

Filter options

Publication date

Date range setting

Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.

Publication type

Keywords

Data set

Journal

Reporting an error / abuse

Sending the report failed

Accessibility options