http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Xiaoning Mao (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
Feng Zhou,Jinjin Cai,Xiaoning Mao,Zhenyu Wu,Yong Nie 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.9
As a green plasticizer, the industrial production of dioctyl terephthalate (DOTP) is still facing the problemof high energy consumption. To optimize the production process and reactor, it is essential to understand the kineticbehavior of reaction system. In this work, the two-step consecutive esterification of solid terephthalic acid (PTA) and 2-ethylhexanol (2-EH) catalyzed by tetrabutyl titanate was studied. First, the equilibrium constants and enthalpies of thetwo-step reaction were experimentally determined and validated by the group contribution methods. Then, a pseudohomogeneouskinetic model was developed, and the reaction order of PTA was corrected to reflect its solid phase characteristic. Non-isothermal kinetic experiments were carried out under different initial feed molar ratios and catalystconcentrations, and the kinetic parameters in the model were estimated by mathematical regression. The model predicteddata agreed well with the experimental data. Finally, the analyses of reaction rate showed that the first-step reactionwas the rate-controlling step of the whole esterification process.
-
Electrospun Ag‑Doped SnO2 Hollow Nanofbers with High Antibacterial Activity
Li Yang,Gao Songwei,Zhang Bin,Mao Huaming,Tang Xiaoning 대한금속·재료학회 2020 ELECTRONIC MATERIALS LETTERS Vol.16 No.3
With the continuous improvement in medical science in modern times, the spread of bacterial infection has become a matterof global concern. Therefore, the search for biological medical materials with antibacterial function has become a focusof intense research. In this work, pure SnO2 and Ag-doped SnO2 hollow nanofbers were fabricated by a combination of anelectrospinning method and a calcination procedure, and the Effects of the doped Ag on antibacterial activity and catalyticantibacterial activity were subsequently investigated. Through the process of high-temperature calcination, a high heatingrate would lead to the formation of a hollow tubular structure in SnO2 fbers, and Ag2O would be reduced to Ag0by a facileprocess with appropriate thermal treatment. Additionally, the existence of SnO2 as a tetragonal rutile structure was confrmed. On the basis of pure SnO2, doping with Ag greatly improved the antibacterial activity and catalytic antibacterial activity ofhollow nanofbers. The formation mechanism and the antibacterial mechanism of pure SnO2 and Ag-doped hollow nanofbersare also discussed. This study has broad application prospects for biological medicine.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
