@article{zhu_gao_wang_haribal_liu_neal_bao_wu_wang_li_2021, title={A tailored multi-functional catalyst for ultra-efficient styrene production under a cyclic redox scheme}, volume={12}, ISSN={["2041-1723"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85101732148&partnerID=MN8TOARS}, DOI={10.1038/s41467-021-21374-2}, abstractNote={Styrene is an important commodity chemical that is highly energy and CO2 intensive to produce. We report a redox oxidative dehydrogenation (redox-ODH) strategy to efficiently produce styrene. Facilitated by a multifunctional (Ca/Mn)1-xO@KFeO2 core-shell redox catalyst which acts as (i) a heterogeneous catalyst, (ii) an oxygen separation agent, and (iii) a selective hydrogen combustion material, redox-ODH auto-thermally converts ethylbenzene to styrene with up to 97% single-pass conversion and >94% selectivity. This represents a 72% yield increase compared to commercial dehydrogenation on a relative basis, leading to 82% energy savings and 79% CO2 emission reduction. The redox catalyst is composed of a catalytically active KFeO2 shell and a (Ca/Mn)1-xO core for reversible lattice oxygen storage and donation. The lattice oxygen donation from (Ca/Mn)1-xO sacrificially stabilizes Fe3+ in the shell to maintain high catalytic activity and coke resistance. From a practical standpoint, the redox catalyst exhibits excellent long-term performance under industrially compatible conditions.}, number={1}, journal={NATURE COMMUNICATIONS}, publisher={Springer Science and Business Media LLC}, author={Zhu, Xing and Gao, Yunfei and Wang, Xijun and Haribal, Vasudev and Liu, Junchen and Neal, Luke M. and Bao, Zhenghong and Wu, Zili and Wang, Hua and Li, Fanxing}, year={2021}, month={Feb} }
 @misc{zhu_imtiaz_donat_mueller_li_2020, title={Chemical looping beyond combustion - a perspective}, volume={13}, ISSN={["1754-5706"]}, url={https://doi.org/10.1039/C9EE03793D}, DOI={10.1039/c9ee03793d}, abstractNote={Facilitated by redox catalysts capable of catalytic reactions and reactive separation, chemical looping offers exciting opportunities for intensified chemical production.}, number={3}, journal={ENERGY & ENVIRONMENTAL SCIENCE}, publisher={Royal Society of Chemistry (RSC)}, author={Zhu, Xing and Imtiaz, Qasim and Donat, Felix and Mueller, Christoph R. and Li, Fanxing}, year={2020}, month={Mar}, pages={772–804} }
 @article{chen_zhu_li_wei_zheng_wang_2019, title={Chemical Looping Co-splitting of H2O-CO2 for Efficient Generation of Syngas}, volume={7}, ISSN={["2168-0485"]}, DOI={10.1021/acssuschemeng.9b02996}, abstractNote={Syngas generation via thermochemical H2O–CO2 splitting relies heavily on a high-temperature decomposition of metal oxides into a reduced state. Meanwhile, typical chemical looping partial oxidation...}, number={18}, journal={ACS SUSTAINABLE CHEMISTRY & ENGINEERING}, author={Chen, Yanpeng and Zhu, Xing and Li, Kongzhai and Wei, Yonggang and Zheng, Yane and Wang, Hua}, year={2019}, month={Sep}, pages={15452–15462} }
 @article{cai_zhu_li_qi_wei_wang_hao_2019, title={Self-enhanced and efficient removal of arsenic from waste acid using magnetite as an in situ iron donator}, volume={157}, ISSN={["0043-1354"]}, DOI={10.1016/j.watres.2019.03.067}, abstractNote={High arsenic-containing waste acid from the heavy nonferrous metallurgical sector (Cu, Pb, Zn, Ni, Sn, etc.), one of the most dangerous arsenic hazardous wastes with extremely high arsenic concentrations, has presented enormous challenges to the environment and caused severe environmental pollution over the past few decades due to the lack of affordable and environmentally friendly disposal technologies. Here, we report a green process for the self-enhanced and efficient removal of arsenic from waste acid using magnetite as an in situ iron donator. Firstly, the room-temperature predissolution of magnetite in waste acid provides initial iron ions as a starting precipitator of arsenic, simultaneously providing a suitable pH range and an active surface that are ready for the nucleation and growth of scorodite. Afterwards, arsenic is precipitated in form the of scorodite, which is driven by a mutually improved cycle composed of arsenic precipitation and magnetite dissolution on the surface of magnetite particles. This cycle creates a low supersaturation of iron and constant pH in the waste acid, ensuring the continuous precipitation of arsenic as well-crystallized and environmentally stable scorodite by using magnetite as an in situ iron donator via the reaction of 2Fe3O4 + 6H3AsO4 + H2O2 = 6FeAsO4 + 10H2O. Under optimal conditions, including a 6-h room-temperature predissolution, a 12-h atmospheric reaction at 90 °C and a pH of 2.0 with a magnetite dosage at the Fe3O4/As molar ratio (the molar ratio of Fe3O4 in magnetite to As in waste acid) of 1.33, 99.90% of arsenic was successively removed from waste acid with an initial arsenic concentration of 10300 mg/L. In combination with the good adaptability of this process, the performed case study and prospective process show the successful removal of arsenic from waste acid as well as great potential for large-scale applications.}, journal={WATER RESEARCH}, author={Cai, Guiyuan and Zhu, Xing and Li, Kongzhai and Qi, Xianjin and Wei, Yonggang and Wang, Hua and Hao, Fengyan}, year={2019}, month={Jun}, pages={269–280} }
 @article{li_gu_zhu_wei_wang_2018, title={Facile Synthesis of Al@Al2O3 Microcapsule for High-Temperature Thermal Energy Storage}, volume={6}, ISSN={["2168-0485"]}, DOI={10.1021/acssuschemeng.8b02840}, abstractNote={Preparation of high-temperature encapsulated phase change materials (PCMs) is very challengeable due to the high chemical corrosion of liquid metal and the high thermal stress caused by volume expansion. We herein report a novel strategy for preparing high-temperature Al@Al2O3 PCM. In this method, nano Ni species are loaded on the surface of Al spheres, which could accelerate the oxidation of the surface Al layer during calcination in air. By monitoring the oxygen consumption and the exothermic changes during the oxidation process, it is found that the oxidation of Al follows a stepwise process which results in the formation of a layered Al2O3 shell. The high oxygen consumption and relatively low activation energy (149–156 kJ/mol) suggests that the surface nickel species significantly accelerate the low-temperature (<650 °C) oxidation of aluminum. The Al@Al2O3 composites show a well-formed core–shell structure with 60–68 wt % of core fraction, high latent heat (289–312 J/g), and mitigated supercooling per...}, number={10}, journal={ACS SUSTAINABLE CHEMISTRY & ENGINEERING}, author={Li, Kongzhai and Gu, Zhenhua and Zhu, Xing and Wei, Yonggang and Wang, Hua}, year={2018}, month={Oct}, pages={13226–13236} }