Ndị ọkà mmụta sayensị na Tokyo Institute of Technology egosila na irighiri ọla kọpa oxide na sub-nanoscale bụ ihe na-akpali akpali karịa ndị nọ na nanoscale.Ihe ndị a subnanoparticles nwekwara ike kpalite mmeghachi omume oxidation nke hydrocarbons aromatic nke ọma karịa ihe na-eme ka a na-eji ugbu a na ụlọ ọrụ.Ọmụmụ ihe a na-emeghe ụzọ maka iji mmanụ aromatic hydrocarbons nke ọma na nke ọma, nke bụ ihe dị mkpa maka nyocha na ụlọ ọrụ.

Nhọrọ oxidation nke hydrocarbons dị mkpa n'ọtụtụ mmeghachi omume kemịkalụ na usoro mmepụta ihe, ya mere, ndị ọkà mmụta sayensị anọwo na-ele anya maka ụzọ ndị ka mma iji mepụta oxidation a.Achọpụtala nanoparticles nanoparticles ọla kọpa (CunOx) bara uru dị ka ihe na-akpali akpali maka nhazi hydrocarbons aromatic, mana ọchịchọ nke ọbụna ogige dị irè ka gara n'ihu.

N'oge na-adịbeghị anya, ndị ọkà mmụta sayensị na-etinye ihe ndị na-eme ka ígwè dị mma na-agụnye ihe ndị mejupụtara na ọkwa sub-nano.N'ọkwa a, ụmụ irighiri ihe na-eru ihe na-erughị nanometer na mgbe etinyere ya na ihe ndị kwesịrị ekwesị, ha nwere ike inye ọbụna ebe dị elu karịa nanoparticle catalysts iji kwalite reactivity.

Na omume a, otu ndị ọkà mmụta sayensị gụnyere Prof. Kimihisa Yamamoto na Dr. Makoto Tanabe si Tokyo Institute of Technology (Tokyo Tech) nyochara mmeghachi omume kemịkalụ nke CunOx subnanoparticles (SNPs) na-eme ka ha nyochaa arụmọrụ ha na oxidation nke aromatic hydrocarbons.A na-emepụta CunOx SNP nke nha atọ dị iche iche (yana 12, 28, na 60 atom ọla kọpa) n'ime usoro osisi ndị a na-akpọ dendrimers.N'ịkwado na mkpụrụ osisi zirconia, a na-etinye ha na oxidation aerobic nke ihe ọkụkụ na-eji mgbanaka benzene aromatic.

A na-eji X-ray photoelectron spectroscopy (XPS) na infrared spectroscopy (IR) nyochaa nhazi nke SNPs synthesized, na arụpụtaghị ihe akwadoro site na ngụkọ njiri arụ ọrụ density (DFT).

Ntụle XPS na ngụkọ DFT kpughere mmụba ionity nke njikọ ọla kọpa-oxygen (Cu-O) ka nha SNP belatara.Njikọ njikọ a dị ukwuu karịa nke a hụrụ na nnukwu njikọ Cu-O, na nnukwu polarization bụ ihe kpatara nkwalite catalytic ọrụ nke CunOx SNPs.

Tanabe na ndị otu ahụ chọpụtara na ndị CunOx SNP kwalitere oxidation nke otu CH3 jikọtara na mgbanaka aromatic, si otú a na-eduga n'ichepụta ngwaahịa.Mgbe ejighị CunOx SNP catalyst, ọ dịghị ngwaahịa e mepụtara.Ihe na-akpali akpali nke nwere obere CunOx SNPs, Cu12Ox, nwere arụmọrụ catalytic kachasị mma ma gosi na ọ bụ nke kachasị ogologo.

Dị ka Tanabe na-akọwa, "nkwalite nke ionity nke njikọ Cu-O na mbelata nke CunOx SNPs na-enyere ha aka ọrụ catalytic ka mma maka aromatic hydrocarbon oxidations."

Nnyocha ha na-akwado arụmụka na enwere ike dị ukwuu maka iji ọla kọpa oxide SNP dị ka ihe na-akpali akpali na ngwa mmepụta ihe."Ọrụ catalytic na usoro nke CunOx SNP ndị a na-achịkwa nke ọma ga-adị mma karịa nke ndị na-eme ka ígwè dị mma, nke a na-ejikarị eme ihe na ụlọ ọrụ ugbu a," Yamamoto na-ekwu, na-egosi ihe CunOx SNP nwere ike ime n'ọdịnihu.

Akụrụngwa nke ụlọ ọrụ teknụzụ Tokyo nyere.Mara: Enwere ike dezie ọdịnaya maka ụdị na ogologo.

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