Skip to main content

Research Repository

Advanced Search

All Outputs (15)

How do CaO/CuO materials evolve in integrated calcium and chemical looping cycles? (2025)
Journal Article
Zheng, Y., & Scott, S. A. (2025). How do CaO/CuO materials evolve in integrated calcium and chemical looping cycles?. Carbon Capture Science & Technology, 15, Article 100389. https://doi.org/10.1016/j.ccst.2025.100389

Maintaining high CO2 uptake is critical for combined Ca-Cu looping applications, however, the long-term behaviour of combined Ca and Cu materials under repeated cycling conditions remains less understood. This study examined three materials with a fi... Read More about How do CaO/CuO materials evolve in integrated calcium and chemical looping cycles?.

Investigation of simultaneous production of H2 and separable carbon from CH4 in a fluidised bed of NiO/Ca2Fe2O5/CaO particles (2024)
Journal Article
Alkhatib, K., Santihayu Sukma, M., Scott, S. A., & Zheng, Y. (2024). Investigation of simultaneous production of H2 and separable carbon from CH4 in a fluidised bed of NiO/Ca2Fe2O5/CaO particles. Fuel, 377, Article 132816. https://doi.org/10.1016/j.fuel.2024.132816

This work investigated the possibility of simultaneous production of hydrogen/syngas and separable solid carbon in a fluidised bed by using CH4-CO2 cycles and exploring the carbon growth over solid catalytic particles of NiO/Ca2Fe2O5/CaO. This two-st... Read More about Investigation of simultaneous production of H2 and separable carbon from CH4 in a fluidised bed of NiO/Ca2Fe2O5/CaO particles.

Dicalcium ferrite: A chemical heat pump in integrated carbon capture and chemical looping combustion for the steel industry (2024)
Journal Article
Sukma, M. S., Zheng, Y., & Scott, S. A. (2024). Dicalcium ferrite: A chemical heat pump in integrated carbon capture and chemical looping combustion for the steel industry. Chemical Engineering Journal, 488, Article 150658. https://doi.org/10.1016/j.cej.2024.150658

An integrated calcium and chemical looping combustion using dicalcium ferrite (Ca2Fe2O5, C2F), a mixed phase from iron and calcium oxides, is proposed here to remove carbon (CO + CO2) contained in the blast furnace gas from the steel industry. C2F is... Read More about Dicalcium ferrite: A chemical heat pump in integrated carbon capture and chemical looping combustion for the steel industry.

Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO2 (2023)
Journal Article
Harrison, A. R. P., Y. Kwong, K. Y., Zheng, Y., Balkrishna, A., Dyson, A., & Marek, E. J. (2023). Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO2. Energy and Fuels, 37(13), 9487-9499. https://doi.org/10.1021/acs.energyfuels.3c01263

The redox behavior of the nonstoichiometric perovskite oxide SrFeO3−δ modified with Ag, CeO2, and Ce was assessed for chemical looping air separation (CLAS) via thermogravimetric analysis and by cyclic release and uptake of O2 in a packed bed reactor... Read More about Kinetic and Thermodynamic Enhancement of Low-Temperature Oxygen Release from Strontium Ferrite Perovskites Modified with Ag and CeO2.

The exploration of NiO/Ca2Fe2O5/CaO in chemical looping methane conversion for syngas and H2 production (2023)
Journal Article
Zheng, Y., Santihayu Sukma, M., & A. Scott, S. (2023). The exploration of NiO/Ca2Fe2O5/CaO in chemical looping methane conversion for syngas and H2 production. Chemical Engineering Journal, 465, Article 142779. https://doi.org/10.1016/j.cej.2023.142779

Materials used for chemical looping can be exploited to process methane in a number of ways. Using the oxygen on the solid material leads to partial or total oxidation, whilst methane cracking to carbon on the depleted solid can produce hydrogen. Reg... Read More about The exploration of NiO/Ca2Fe2O5/CaO in chemical looping methane conversion for syngas and H2 production.

Understanding the Behavior of Dicalcium Ferrite (Ca2Fe2O5) in Chemical Looping Syngas Production from CH4 (2022)
Journal Article
Sukma, M. S., Zheng, Y., Hodgson, P., & Scott, S. (2022). Understanding the Behavior of Dicalcium Ferrite (Ca2Fe2O5) in Chemical Looping Syngas Production from CH4. Energy and Fuels, 36(17), 9410-9422. https://doi.org/10.1021/acs.energyfuels.2c01065

Previous work on calcium ferrites showed they were able to convert syngas to hydrogen via chemical looping. The mixture of iron and calcium and their oxides has different thermodynamic properties than iron oxide alone. Here, the use of methane, an ab... Read More about Understanding the Behavior of Dicalcium Ferrite (Ca2Fe2O5) in Chemical Looping Syngas Production from CH4.

The combustion of waste, industrial glycerol in a fluidised bed (2022)
Journal Article
McCann, T., Marek, E. J., Zheng, Y., Davidson, J. F., & Hayhurst, A. N. (2022). The combustion of waste, industrial glycerol in a fluidised bed. Fuel, 322, 124169. https://doi.org/10.1016/j.fuel.2022.124169

Large quantities of glycerol are produced as a somewhat useless, industrial by-product, when producing biodiesel. Thus, the combustion of this waste (containing glycerol, less volatile, non-glyceride oils, ash and water) in a fluidised bed has been i... Read More about The combustion of waste, industrial glycerol in a fluidised bed.

H2 production from a plasma-assisted chemical looping system from the partial oxidation of CH4 at mild temperatures (2019)
Journal Article
Zheng, Y., Marek, E., & A. Scott, S. (2020). H2 production from a plasma-assisted chemical looping system from the partial oxidation of CH4 at mild temperatures. Chemical Engineering Journal, 379, Article 122197. https://doi.org/10.1016/j.cej.2019.122197

A plasma-assisted chemical looping system for the production of H2 (PCLH) was investigated in this study. This system allows the partial oxidation of CH4 at mild temperatures (573–773 K). Four active oxygen carriers: Fe2O3, NiO-impregnated Fe2O3 (NiO... Read More about H2 production from a plasma-assisted chemical looping system from the partial oxidation of CH4 at mild temperatures.

The continuous combustion of glycerol in a fluidised bed (2018)
Journal Article
Gibson, I., Slim, C. J., Zheng, Y., Scott, S. A., Davidson, J. F., & Hayhurst, A. N. (2019). The continuous combustion of glycerol in a fluidised bed. Combustion and Flame, 200, 60-68. https://doi.org/10.1016/j.combustflame.2018.10.021

It is difficult to burn a liquid fuel inside a fluidised bed. For the first time, liquid glycerol has been burned, when continuously injected into the bottom of an electrically heated bed of alumina particles (sieved to 355–425 µm), fluidised by air.... Read More about The continuous combustion of glycerol in a fluidised bed.

Investigation of the conversion of fuels in the presence of solid oxygen carriers and the development of a plasma-assisted chemical looping system for H2 production (2018)
Thesis
Zheng, Y. Investigation of the conversion of fuels in the presence of solid oxygen carriers and the development of a plasma-assisted chemical looping system for H2 production. (Thesis). University of Cambridge. https://nottingham-repository.worktribe.com/output/32757541

The thesis, entitled ‘Investigation of the conversion of fuels in the presence of solid oxygen carriers and the development of a plasma-assisted chemical looping system for H2 production’, presents the work of Yaoyao Zheng in the Department of Engine... Read More about Investigation of the conversion of fuels in the presence of solid oxygen carriers and the development of a plasma-assisted chemical looping system for H2 production.

Pyrolysis of wood pellets in the presence of oxygen carriers in a fluidised bed coupled with a DBD reactor for tar quantification (2018)
Journal Article
Zheng, Y., Grant, R., Hu, W., & Scott, S. A. (2019). Pyrolysis of wood pellets in the presence of oxygen carriers in a fluidised bed coupled with a DBD reactor for tar quantification. Chemical Engineering Journal, 355, 858-870. https://doi.org/10.1016/j.cej.2018.08.090

The pyrolysis of wood in the presence of chemical looping agents including Fe2O3, mayenite-supported CuO and mayenite-supported Cu2O was studied from 773 to 1173 K. A continuous tar quantification system, based on a DBD reactor downstream of the flui... Read More about Pyrolysis of wood pellets in the presence of oxygen carriers in a fluidised bed coupled with a DBD reactor for tar quantification.

Enhancement of char gasification in CO2 during chemical looping combustion (2018)
Journal Article
Marek, E. J., Zheng, Y., & Scott, S. A. (2018). Enhancement of char gasification in CO2 during chemical looping combustion. Chemical Engineering Journal, 354, 137-148. https://doi.org/10.1016/j.cej.2018.07.215

Three chars were gasified in CO2 in a fluidised bed of inert sand or Fe2O3 as an oxygen carrier (either derived from an ore or prepared in the laboratory). Rates of gasification were found to increase with temperature and the presence of active oxyge... Read More about Enhancement of char gasification in CO2 during chemical looping combustion.

H2 production from partial oxidation of CH4 by Fe2O3-supported Ni-based catalysts in a plasma-assisted packed bed reactor (2018)
Journal Article
Zheng, Y., Grant, R., Hu, W., Marek, E., & Scott, S. A. (2019). H2 production from partial oxidation of CH4 by Fe2O3-supported Ni-based catalysts in a plasma-assisted packed bed reactor. Proceedings of the Combustion Institute, 37(4), 5481-5488. https://doi.org/10.1016/j.proci.2018.05.101

H 2 -rich gas production from CH 4 at mild temperature (673K), was achieved in a single step without introducing a separate oxygen stream. This was conducted in a plasma-assisted packed bed reactor in the presence of Ni-based catalysts doped on an ac... Read More about H2 production from partial oxidation of CH4 by Fe2O3-supported Ni-based catalysts in a plasma-assisted packed bed reactor.

An examination of Wen and Yu's formula for predicting the onset of fluidisation (2018)
Journal Article
Gibson, I. A., Slim, C. J., Zheng, Y., Scott, S. A., Davidson, J. F., & Hayhurst, A. N. (2018). An examination of Wen and Yu's formula for predicting the onset of fluidisation. Chemical Engineering Research and Design, 135, 103-111. https://doi.org/10.1016/j.cherd.2018.05.009

Classical methods (measuring the pressure drop across a bed for different flowrates of air through the bed) were used to determine the superficial velocity for minimum fluidisation, Umf, of sieved particles of alumina. The particles were characterise... Read More about An examination of Wen and Yu's formula for predicting the onset of fluidisation.