With the development of industrial society,the emission of SO_(2) gas increases sharply.Because of the harm of SO_(2) to the environment and human health,it is crucial to detect and capture SO_(2),especially to develo...With the development of industrial society,the emission of SO_(2) gas increases sharply.Because of the harm of SO_(2) to the environment and human health,it is crucial to detect and capture SO_(2),especially to develop gas sensing materials with good selectivity and durability to SO_(2).In this work,we prepared a C_(3)N_(4)/ZnO/C hybrid,MFM@IRMOF-3-T,for SO_(2) monitoring by annealing a composite of melamine-formaldehyde resin microsphere (MFM) and isoreticular metal-organic frameworks (IRMOF)-3.展开更多
The Glass Menagerie is Tennessee Williams's first successful play. He uses several symbols in this play and enforces the tragic effect of the characters. Most people think that the unicorn represents Laura herself...The Glass Menagerie is Tennessee Williams's first successful play. He uses several symbols in this play and enforces the tragic effect of the characters. Most people think that the unicorn represents Laura herself, especially her peculiarity, but to my understanding, it's more like Jim O'Connor, rare and special yet tragic. My essay provides a new interpretation to the symbolic meaning of the unicorn, highlighting the tragic and fragile feature of it.展开更多
Catalytic polymerization of acetylene in the presence of n5-C5H5-M-(CO)3 R (M=Mo,W;R=CH3-,C2H5-) has been studied.The results show that these complexes possess catalytic activities for the polymerization and copolymer...Catalytic polymerization of acetylene in the presence of n5-C5H5-M-(CO)3 R (M=Mo,W;R=CH3-,C2H5-) has been studied.The results show that these complexes possess catalytic activities for the polymerization and copolymerization of monosubstituted acetylene.The catalytic mechanism has been preliminarily discussed.It is suggested that the active species be metal-car-bene.In our previous publications we reported the synthesis of some new Fischer's molybdenum and tungsten-carbene complexes and catalytic activity for alkyne polymerization.The results show that the activity of Fischer's molybdenum-carbene is higher than that of tungsten.The catalytic polymerization of alkyne by M-σ-c bond-containing complexes of molybdenum and tungsten has not been reported yet in literature.Therefore,four M-σ-C bondontaining complexes of molybdenum and tungsten were synthesized by using the method reported in the literature,and catalyst polymerization of alkyne by these complexes was examined.展开更多
基金financially supported by the Natural Science Foundation of Hainan Province (No.220MS005)Hainan Province Science and Technology Special Fund (No. ZD YF2022S HFZ090)+2 种基金National Natural Science Foundation of China (No.21761010)Hainan University Start-Up Fund (Nos. KYQD(ZR)1932 and KYQD(ZR)1910)the Opening Project of Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education,Northeast Normal University。
文摘With the development of industrial society,the emission of SO_(2) gas increases sharply.Because of the harm of SO_(2) to the environment and human health,it is crucial to detect and capture SO_(2),especially to develop gas sensing materials with good selectivity and durability to SO_(2).In this work,we prepared a C_(3)N_(4)/ZnO/C hybrid,MFM@IRMOF-3-T,for SO_(2) monitoring by annealing a composite of melamine-formaldehyde resin microsphere (MFM) and isoreticular metal-organic frameworks (IRMOF)-3.
文摘The Glass Menagerie is Tennessee Williams's first successful play. He uses several symbols in this play and enforces the tragic effect of the characters. Most people think that the unicorn represents Laura herself, especially her peculiarity, but to my understanding, it's more like Jim O'Connor, rare and special yet tragic. My essay provides a new interpretation to the symbolic meaning of the unicorn, highlighting the tragic and fragile feature of it.
文摘Catalytic polymerization of acetylene in the presence of n5-C5H5-M-(CO)3 R (M=Mo,W;R=CH3-,C2H5-) has been studied.The results show that these complexes possess catalytic activities for the polymerization and copolymerization of monosubstituted acetylene.The catalytic mechanism has been preliminarily discussed.It is suggested that the active species be metal-car-bene.In our previous publications we reported the synthesis of some new Fischer's molybdenum and tungsten-carbene complexes and catalytic activity for alkyne polymerization.The results show that the activity of Fischer's molybdenum-carbene is higher than that of tungsten.The catalytic polymerization of alkyne by M-σ-c bond-containing complexes of molybdenum and tungsten has not been reported yet in literature.Therefore,four M-σ-C bondontaining complexes of molybdenum and tungsten were synthesized by using the method reported in the literature,and catalyst polymerization of alkyne by these complexes was examined.
