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ENERGIX-Stort program energi

H2MemX - Enabling ultrathin Pd based membranes through surface chemistry diagnostics and control

Alternative title: H2MemX - ultratynne Pd-baserte membraner gjort mulig gjennom forkningsfronten innen eksperimentell overflatekjemi

Awarded: NOK 9.9 mill.

Palladium (Pd) based membranes for separation of hydrogen are under commercialization on basis of identified benefits in terms of separation efficiency, hydrogen purity, membrane stability, and cost relative to existing separation technology. This membrane technology is well suited for integration with different hydrogen production process technologies, in particular hydrogen production from natural gas with carbon capture and storage (CCS) - so-called blue hydrogen. The H2MemX main hypothesis is that industrial application of Pd alloy membranes for hydrogen separation requires taking the understanding of the membrane chemistry and structure under industrially relevant conditions to a new level. The H2MemX consortium represents unique competence and extensive experience in combining education, fundamental science and industrial relevance through Centre and project grants. Department of Chemical Engineering, NTNU, represents strong experience in surface science and fundamental membrane investigations. SINTEF Industry has developed a unique membrane fabrication technology that is being commercialized in a joint effort with Hydrogen Mem-Tech AS, aiming at hydrogen production from natural gas with CO2 capture. NTNU and SINTEF hold complementary knowledge and an extensive theoretical and experimental toolbox for detailed characterization of membranes. The advancement of so-called in situ methodology for investigating the membrane surface under working conditions will be pursued in a collaboration with Lund University and the MAXIV laboratories. The new MAXIV synchrotron in Lund, Sweden, represents unique possibilities for H2MemX, and the principal investigators have been between the first test users for photoelectron spectroscopy under gas exposure at the HIPPIE beamline. H2MemX will educate one PhD candidate and promote the research careers of a highly skilled postdoctoral fellow and a young research scientist, both female. The postdoctoral fellow has completed the postdoc period and has now started in a new, relevant position in the industry. 4-6 Master candidates in chemical engineering or nanotechnology will be affiliated with the project. The final project deliveries also include 6-8 scientific publications, dissemination at conferences as well as an innovation plan. An industrial advisory committee was established June 2019, with members from Hydrogen Mem-Tech AS and KA Rasmussen AS. The H2MemX research team has so far obtained and executed three experimental beamtime periods of one week each at the HIPPIE Ambient pressure X-ray photoelectron spectroscopy (APXPS) beamline at the MAXIV Synchrotron facility in Lund, Sweden. The first and last period (June -19 and Oct/Nov. 2020) concerned experiments in the unique HIPPIE reaction cell with CO oxidation cycles and CO hydrogenation over a Pd75%Ag25% single crystals, looking at the correlation between segregation of Pd/Ag and reactivity. For the second period (Sept -19), a cell was designed and implemented with 10 µm thin film Pd 23%Ag membranes produced by SINTEF. This allowed characterization of the membrane near-surface region (feed side) during hydriding and permeation in the range from room temperature to 380 °C. Among other things, segregation was observed. These results obtained from the experiments at MAX IV have led to one peer-reviewed publication, and we have valuable data that will result in additional publications. In addition, modeling results on the combined effects of CO and hydrogen adsorption and PdAg alloy segregation based on quantum chemistry were completed and published in 2020, in collaboration with colleagues at UW Madison, USA. The PhD main experimental activity is on membrane separation investigations. However, this has been delayed due to Covid-19 restrictions, which caused delays in workshop assistance and supply of basic laboratory parts. Our home hydrogen permeation lab is now renovated and up and running and a series of measurements investigating the effect of CO2 on the hydrogen permeation through thin films Pd-Ag membranes is underway.

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PPalladium (Pd) based membranes for separation of hydrogen are under commercialization on basis of identified benefits in terms of efficiency, purity, stability, and cost relative to existing separation technology. This membrane technology is well suited for integration with different hydrogen production process technologies, as well as carbon capture and storage (CCS). The H2MemX main hypothesis is that industrial application of Pd alloy membranes for hydrogen separation requires taking the understanding of the membrane chemistry and structure under industrially relevant conditions to a new level. The H2MemX consortium represents unique competence and extensive experience in combining education, fundamental science and industrial relevance through Centre and project grants. Department of Chemical Engineering, NTNU, represents strong experience in surface science and fundamental membrane investigations. SINTEF Industry has developed a unique membrane fabrication technology that is being commercialized in a joint effort with Hydrogen Mem-Tech AS, aiming at hydrogen production from natural gas with CO2 capture. NTNU and SINTEF hold complementary knowledge and an extensive theoretical and experimental toolbox for detailed characterization of membranes. The advancement of so-called in situ methodology for investigating the membrane surface under working conditions will be pursued in a collaboration with Lund University and the MAXIV laboratories. The new MAXIV synchrotron represents unique possibilities for H2MemX, and the principal investigators have been between the first test users. H2MemX will educate one PhD candidate and promote the research careers of a highly skilled postdoctoral fellow and a young research scientist, both female. 4-6 Master candidates in chemical engineering or nanotechnology will be educated within the project. The final project deliveries includes 6-8 scientific publications, dissemination at conferences as well as an innovation plan.

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ENERGIX-Stort program energi