{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["15(57)"],"submitter":["Li N"],"pubmed_abstract":["In the present study, tubular copper silicate microspheres (CuSi-NTMs) were hydrothermally synthesized using high-silicon rice husk ash (RHA) as the raw material. Structural characterization reveals CuSi-NTMs have abundant mesopores, with a larger pore volume (0.367 cm<sup>3</sup> g<sup>-1</sup>) and specific surface area (375 m<sup>2</sup> g<sup>-1</sup>) than the precursor RHA, facilitating active component dispersion. As expected, CuSi-NTMs exhibited superior catalytic performance in the dearomatization reaction between phenol derivatives and azodicarboxylates compared to other copper-based catalysts, achieving a 98% yield. The steric hindrance and electronic effects of phenolic substituents were also investigated. An ionic catalytic mechanism for CuSi-NTMs has been proposed. Cu(ii) coo"],"journal":["RSC advances"],"pagination":["49557-49564"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12700137"],"repository":["biostudies-literature"],"pubmed_title":["Fabrication of copper silicate microspheres using rice husk ash and its application for dearomatization of phenol derivatives."],"pmcid":["PMC12700137"],"pubmed_authors":["Li H","Shen Q","Su L","Han X","Wang H","Li N"],"additional_accession":[]},"is_claimable":false,"name":"Fabrication of copper silicate microspheres using rice husk ash and its application for dearomatization of phenol derivatives.","description":"In the present study, tubular copper silicate microspheres (CuSi-NTMs) were hydrothermally synthesized using high-silicon rice husk ash (RHA) as the raw material. Structural characterization reveals CuSi-NTMs have abundant mesopores, with a larger pore volume (0.367 cm<sup>3</sup> g<sup>-1</sup>) and specific surface area (375 m<sup>2</sup> g<sup>-1</sup>) than the precursor RHA, facilitating active component dispersion. As expected, CuSi-NTMs exhibited superior catalytic performance in the dearomatization reaction between phenol derivatives and azodicarboxylates compared to other copper-based catalysts, achieving a 98% yield. The steric hindrance and electronic effects of phenolic substituents were also investigated. An ionic catalytic mechanism for CuSi-NTMs has been proposed. Cu(ii) coo","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Dec","modification":"2026-06-06T02:51:29.546Z","creation":"2026-05-24T03:13:04.831Z"},"accession":"S-EPMC12700137","cross_references":{"pubmed":["41395200"],"doi":["10.1039/d5ra09185c"]}}