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Low-temperature hydrogen production from water and methanol using Pt/alpha-MoC catalysts
Lin, Lili; Zhou, Wu; Gao, Rui; Yao, Siyu; Zhang, Xiao; Xu, Wenqian; Zheng, Shijian; Jiang, Zheng; Yu, Qiaolin; Li, Yong-Wang; Shi, Chuan; Wen, Xiao-Dong; Ma, Ding; Wen, XD (reprint author), Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, POB 165, Taiyuan 030001, Shanxi, Peoples R China.; Wen, XD (reprint author), Synfuels China Co Ltd, Beijing 100195, Peoples R China.; Shi, C (reprint author), Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China.
2017-04-06
Source PublicationNATURE
ISSN0028-0836
Volume544Issue:7648Pages:80-+
AbstractPolymer electrolyte membrane fuel cells (PEMFCs) running on hydrogen are attractive alternative power supplies for a range of applications(1-3), with in situ release of the required hydrogen from a stable liquid offering one way of ensuring its safe storage and transportation(4,5) before use. The use of methanol is particularly interesting in this regard, because it is inexpensive and can reform itself with water to release hydrogen with a high gravimetric density of 18.8 per cent by weight. But traditional reforming of methanol steam operates at relatively high temperatures (200-350 degrees Celsius)(6-8), so the focus for vehicle and portable PEMFC applications(9) has been on aqueous-phase reforming of methanol (APRM). This method requires less energy, and the simpler and more compact device design allows direct integration into PEMFC stacks(10,11). There remains, however, the need for an efficient APRM catalyst. Here we report that platinum (Pt) atomically dispersed on a-molybdenum carbide (alpha-MoC) enables low-temperature (150-190 degrees Celsius), base-free hydrogen production through APRM, with an average turnover frequency reaching 18,046 moles of hydrogen per mole of platinum per hour. We attribute this exceptional hydrogen production-which far exceeds that of previously reported low-temperature APRM catalysts-to the outstanding ability of a-MoC to induce water dissociation, and to the fact that platinum and a-MoC act in synergy to activate methanol and then to reform it.; Polymer electrolyte membrane fuel cells (PEMFCs) running on hydrogen are attractive alternative power supplies for a range of applications(1-3), with in situ release of the required hydrogen from a stable liquid offering one way of ensuring its safe storage and transportation(4,5) before use. The use of methanol is particularly interesting in this regard, because it is inexpensive and can reform itself with water to release hydrogen with a high gravimetric density of 18.8 per cent by weight. But traditional reforming of methanol steam operates at relatively high temperatures (200-350 degrees Celsius)(6-8), so the focus for vehicle and portable PEMFC applications(9) has been on aqueous-phase reforming of methanol (APRM). This method requires less energy, and the simpler and more compact device design allows direct integration into PEMFC stacks(10,11). There remains, however, the need for an efficient APRM catalyst. Here we report that platinum (Pt) atomically dispersed on a-molybdenum carbide (alpha-MoC) enables low-temperature (150-190 degrees Celsius), base-free hydrogen production through APRM, with an average turnover frequency reaching 18,046 moles of hydrogen per mole of platinum per hour. We attribute this exceptional hydrogen production-which far exceeds that of previously reported low-temperature APRM catalysts-to the outstanding ability of a-MoC to induce water dissociation, and to the fact that platinum and a-MoC act in synergy to activate methanol and then to reform it.
description.department[lin, lili ; yao, siyu ; yu, qiaolin ; ma, ding] peking univ, coll chem & mol engn, beijing 100871, peoples r china ; [zhou, wu] univ chinese acad sci, cas key lab vacuum phys, sch phys sci, beijing 100049, peoples r china ; [zhou, wu] oak ridge natl lab, mat sci & technol div, oak ridge, tn 37831 usa ; [gao, rui ; li, yong-wang ; wen, xiao-dong] chinese acad sci, inst coal chem, state key lab coal convers, pob 165, taiyuan 030001, shanxi, peoples r china ; [gao, rui ; li, yong-wang ; wen, xiao-dong] synfuels china co ltd, beijing 100195, peoples r china ; [zhang, xiao ; shi, chuan] dalian univ technol, key lab ind ecol & environm engn moe, dalian 116024, peoples r china ; [xu, wenqian] argonne natl lab, xray sci div adv photon source, 9700 s cass ave, argonne, il 60439 usa ; [zheng, shijian] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [jiang, zheng] chinese acad sci, shanghai inst appl phys, shanghai 201204, peoples r china
Subject AreaMultidisciplinary Sciences
Funding Organization973 Project [2011CB201402, 2013CB933100]; Natural Science Foundation of China [91645115, 21473003, 21222306, 21373037, 21577013, 91545121]; Chinese Academy of Sciences (CAS) Pioneer Hundred Talents Program; US Department of Energy (DOE), Office of Science, Basic Energy Science, Materials Sciences and Engineering Division; user project at Oak Ridge National Laboratory's Center for Nanophase Materials Sciences (CNMS), which is a DOE Office of Science User Facility; DOE Office of Science by Argonne National Laboratory [DE-AC02-06CH11357]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78189
Collection中国科学院金属研究所
Corresponding AuthorWen, XD (reprint author), Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, POB 165, Taiyuan 030001, Shanxi, Peoples R China.; Wen, XD (reprint author), Synfuels China Co Ltd, Beijing 100195, Peoples R China.; Shi, C (reprint author), Dalian Univ Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China.
Recommended Citation
GB/T 7714
Lin, Lili,Zhou, Wu,Gao, Rui,et al. Low-temperature hydrogen production from water and methanol using Pt/alpha-MoC catalysts[J]. NATURE,2017,544(7648):80-+.
APA Lin, Lili.,Zhou, Wu.,Gao, Rui.,Yao, Siyu.,Zhang, Xiao.,...&Shi, C .(2017).Low-temperature hydrogen production from water and methanol using Pt/alpha-MoC catalysts.NATURE,544(7648),80-+.
MLA Lin, Lili,et al."Low-temperature hydrogen production from water and methanol using Pt/alpha-MoC catalysts".NATURE 544.7648(2017):80-+.
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