Author
Dongxu Cui
Bio: Dongxu Cui is an academic researcher from Southeast University. The author has contributed to research in topics: Chemical looping combustion & Hydrogen production. The author has an hindex of 9, co-authored 20 publications receiving 170 citations.
Papers
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TL;DR: In this article, a series of binary oxygen carrier materials (CoFeOy, NiFeOY, CuOy) and investigated the chemical looping hydrogen production performance at intermediate temperatures.
39 citations
TL;DR: In this article, several ternary spinels were used for chemical looping CO2 splitting at moderate temperatures, and the results showed that the spinels achieved high CO 2 splitting rate and high CO production.
37 citations
TL;DR: The sintering of oxygen carrier materials can be circumvented by operating chemical looping at relatively low temperatures (see as mentioned in this paper for a detailed discussion of the effects of looping on oxygen carrier material sinterment).
32 citations
TL;DR: In this paper, the authors show that the oxygen releasing rate can be well controlled within a long reaction period by the specific spatial structure, demonstrating a new strategy to tune the oxygen diffusion in chemical looping process.
Abstract: Chemical looping redox cycle of oxygen storage materials offers a versatile platform to convert methane to value-added products in a clean and efficient manner. However, the highly dynamic nature of the oxygen diffusion process restrains the selective formation of the target products over a long reaction period. In this work, we show the oxygen storage materials-comprising of iron oxides and zirconium oxide support, with the nickel catalyst controllably deposited—that significantly enhanced the syngas selectivity. Mechanistic study indicated the oxygen releasing rate can be well controlled within a long reaction period by the specific spatial structure, demonstrating a new strategy to tune the oxygen diffusion in chemical looping process. Through the observed spatial effects, this work can be also extended to develop more oxygen storage materials for the other chemical looping applications, e.g. methane reforming, methane oxidative coupling, ethane oxidative dehydrogenation, etc.
31 citations
TL;DR: In this article, the authors reported several iron oxides supported by ionic conducting gadolinium-doped cerium oxides (GDC) for efficient chemical looping hydrogen production.
29 citations
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TL;DR: In this article, the authors summarize the recent advances of metal-organic frameworks in the fields of green applications, including carbon capture, harmful gas removal, sewage treatment, and green energy storage, and discuss the challenges and prospects of large-scale commercialized use of MOFs in handling environmental issues.
102 citations
TL;DR: In this article, chemical looping technology enables achievement of the simultaneous feedstock conversion and product separation without additional processes via circulating solid intermediates (so-called oxygen/nitrogen).
Abstract: Chemical looping technology enables achievement of the simultaneous feedstock conversion and product separation without additional processes via circulating solid intermediates (so-called oxygen/ni...
91 citations
TL;DR: In this article, the conventional and green chemistry synthesis of spinel ferrites is reviewed, and the critical pathways to improve the catalytic performance are discussed in detail, mainly covering selective doping, site substitution, structure reversal, defect introduction and coupled composites.
87 citations
TL;DR: In this paper, the authors highlight the latest research efforts regarding the origin of the ex-solution phenomenon and the mechanism underpinning particle formation and propose research directions to expand the utility and functionality of the current exsolution techniques.
Abstract: Supported metal catalysts represent one of the major milestones in heterogeneous catalysis. Such catalytic systems are feasible for use in a broad range of applications, including renewable energy devices, sensors, automotive emission control systems, and chemical reformers. The lifetimes of these catalytic platforms depend strongly on the stability of the supported nanoparticles. With this regard, nanoparticles synthesized via ex-solution process emphasize exceptional robustness as they are socketed in the host oxide. Ex-solution refers to a phenomenon which yields selective growth of fine and uniformly distributed metal nanocatalysts on oxide supports upon partial reduction. This type of advanced structural engineering is a game-changer in the field of heterogeneous catalysis with numerous studies showing the benefits of ex-solution process. In this review, we highlight the latest research efforts regarding the origin of the ex-solution phenomenon and the mechanism underpinning particle formation. We also propose research directions to expand the utility and functionality of the current ex-solution techniques.
69 citations
TL;DR: In this paper, the authors provide a review of the MPL@PCM composites that are of interest for both photocatalytic and lighting fields, in terms of the unique luminescence of MPLs and the principal optical properties of PCMs.
68 citations