In situ X-ray diffraction study of dehydrogenation of MgH2 with Ti-based additives》.pdfVIP

i n t e r n a t i o n a l j o u r n a l o f h y d r o g e n e n e r g y 3 9 ( 2 0 1 4 ) 5 8 6 8 e5 8 7 3 Available online at ScienceDirect journal homepage: /locate/he In situ X-ray diffraction study of dehydrogenation of MgH2 with Ti-based additives a a, a b c Chai Ren , Z. Zak Fang *, Chengshang Zhou , Jun Lu , Yang Ren , Xiaoyi Zhang c, Xiangyi Luo a a Department of Metallurgical Engineering, University of Utah, 135 South 1460 East, Room 412, Salt Lake City, UT 84112-0114, USA b Chemical Science and Engineering Division, Argonne National Laboratory, 9700 South, Cass Avenue, Lemont, IL 60439, USA c Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, IL 60439, USA a r t i c l e i n f o a b s t r a c t Article history: Synchrotron based in situ x-ray diffraction measurements and an analysis of the dehy- Received 28 September 2013 drogenation of MgH and MgH with Ti-based additives, including TiH and TiMn , are 2 2 2 2 Received in revised form presented. g-MgH2 to b-MgH2 phase transformation in ball milled MgH2 samples was 14 January 2014 observed prior to the dehydrogenation reaction. During the dehydrogenation of MgH2 there Accepted 24 January 2014 were no significant phase transformations observed of the additives. These Ti-based ad- Available onlin