{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Kubo M"],"funding":["New Energy and Industrial Technology Development Organization"],"pagination":["E258"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC7600925"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["10(10)"],"pubmed_abstract":["Solar hydrogen production via the photoelectrochemical water-splitting reaction is attractive as one of the environmental-friendly approaches for producing H2. Since the reaction simultaneously generates H2 and O2, this method requires immediate H2 recovery from the syngas including O2 under high-humidity conditions around 50 °C. In this study, a supported mesoporous γ-Al2O3 membrane was modified with allyl-hydrido-polycarbosilane as a preceramic polymer and subsequently heat-treated in Ar to deliver a ternary SiCH organic-inorganic hybrid/γ-Al2O3 composite membrane. Relations between the polymer/hybrid conversion temperature, hydrophobicity, and H2 affinity of the polymer-derived SiCH hybrids were studied to functionalize the composite membranes as H2-selective under saturated water vapor partial pressure at 50 °C. As a result, the composite membranes synthesized at temperatures as low as 300-500 °C showed a H2 permeance of 1.0-4.3 × 10-7 mol m-2 s-1 Pa-1 with a H2/N2 selectivity of 6.0-11.3 under a mixed H2-N2 (2:1) feed gas flow. Further modification by the 120 °C-melt impregnation of low molecular weight polycarbosilane successfully improved the H2-permselectivity of the 500 °C-synthesized composite membrane by maintaining the H2 permeance combined with improved H2/N2 selectivity as 3.5 × 10-7 mol m-2 s-1 Pa-1 with 36. These results revealed a great potential of the polymer-derived SiCH hybrids as novel hydrophobic membranes for purification of solar hydrogen."],"journal":["Membranes"],"pubmed_title":["Hydrogen Selective SiCH Inorganic-Organic Hybrid/γ-Al2O3 Composite Membranes."],"pmcid":["PMC7600925"],"funding_grant_id":["“Research Project for Future Development: Artificial Photosynthetic Chemical Process (ARPChem)” (METI/NEDO, Japan: 2012-2022)."],"pubmed_authors":["Honda S","Bernard S","Riedel R","Iwamoto Y","Mano R","Kojima M","Ionescu E","Kubo M","Daiko Y","Naniwa K"],"additional_accession":[]},"is_claimable":false,"name":"Hydrogen Selective SiCH Inorganic-Organic Hybrid/γ-Al2O3 Composite Membranes.","description":"Solar hydrogen production via the photoelectrochemical water-splitting reaction is attractive as one of the environmental-friendly approaches for producing H2. Since the reaction simultaneously generates H2 and O2, this method requires immediate H2 recovery from the syngas including O2 under high-humidity conditions around 50 °C. In this study, a supported mesoporous γ-Al2O3 membrane was modified with allyl-hydrido-polycarbosilane as a preceramic polymer and subsequently heat-treated in Ar to deliver a ternary SiCH organic-inorganic hybrid/γ-Al2O3 composite membrane. Relations between the polymer/hybrid conversion temperature, hydrophobicity, and H2 affinity of the polymer-derived SiCH hybrids were studied to functionalize the composite membranes as H2-selective under saturated water vapor partial pressure at 50 °C. As a result, the composite membranes synthesized at temperatures as low as 300-500 °C showed a H2 permeance of 1.0-4.3 × 10-7 mol m-2 s-1 Pa-1 with a H2/N2 selectivity of 6.0-11.3 under a mixed H2-N2 (2:1) feed gas flow. Further modification by the 120 °C-melt impregnation of low molecular weight polycarbosilane successfully improved the H2-permselectivity of the 500 °C-synthesized composite membrane by maintaining the H2 permeance combined with improved H2/N2 selectivity as 3.5 × 10-7 mol m-2 s-1 Pa-1 with 36. These results revealed a great potential of the polymer-derived SiCH hybrids as novel hydrophobic membranes for purification of solar hydrogen.","dates":{"release":"2020-01-01T00:00:00Z","publication":"2020 Sep","modification":"2025-04-22T09:31:42.065Z","creation":"2025-04-05T23:06:25.743Z"},"accession":"S-EPMC7600925","cross_references":{"pubmed":["32992911"],"doi":["10.3390/membranes10100258"]}}