☆ 4.2 Article

Oxidative Desulfurization of Fuel Oil at Room Temperature Catalyzed by Ordered Meso-macroporous HPW/SiO2

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION (2019)

期刊

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION

卷 34, 期 5, 页码 1071-1076

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WUHAN UNIV TECHNOLOGY

DOI: 10.1007/s11595-019-2161-4

关键词

room temperature; ordered meso-macroporous SiO2; Keggin heteropolyacids; oxidative desulfurization

类别

Materials Science, Multidisciplinary

资金

National Nature Science Foundation of China [21476177]

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摘要

A serial of ordered meso-macroporous phosphotungstic acid (HPW) supported on SiO2 nanocomposites were successfully prepared by a homogeneous precipitation method, using monodispersed polystyrene (PS) microspheres and cationic surfactant as structure directing agent. These nanocomposites were used as catalysts for oxidative desulfurization (ODS) of model fuel. The materials were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), N-2 adsorption-desorption isothrem, X-ray diffraction (XRD), and Fourier transform infrared spectra (FTIR). The characterization results suggested that the as-prepared material possessed ordered meso-macroporous architectures with Keggin type phosphotungstic acid dispersed homogeneously in SiO2 matrix. Under the selected reaction conditions, dibenzothiophene (DBT) in model fuel can be removed within 2 h at room temperature (30 degrees C). In addition, only 1.2% of efficiency lose than the fresh catalyst even after 5 cycles.

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Schroeder, K. Schultz, E. Schuster, J. Schwartz, F. Sciortino, F. Scotti, J. Scoville, A. Seltzman, S. Seol, I Sfiligoi, M. Shafer, S. Sharapov, H. Shen, Z. Sheng, T. Shepard, S. Shi, Y. Shibata, G. Shin, D. Shiraki, R. Shousha, H. Si, P. Simmerling, G. Sinclair, J. Sinha, P. Sinha, G. Sips, T. Sizyuk, C. Skinner, A. Sladkomedova, T. Slendebroek, J. Slief, R. Smirnov, J. Smith, S. Smith, D. Smith, J. Snipes, G. Snoep, A. Snyder, P. Snyder, E. Solano, W. Solomon, J. Song, A. Sontag, V Soukhanovskii, J. Spendlove, D. Spong, J. Squire, C. Srinivasan, W. Stacey, G. Staebler, L. Stagner, T. Stange, P. Stangeby, R. Stefan, R. Stemprok, D. Stephan, J. Stillerman, T. Stoltzfus-Dueck, W. Stonecipher, S. Storment, E. Strait, D. Su, L. Sugiyama, Y. Sun, P. Sun, Z. Sun, A. Sun, D. Sundstrom, C. Sung, J. Sungcoco, W. Suttrop, Y. Suzuki, T. Suzuki, A. Svyatkovskiy, C. Swee, R. Sweeney, C. Sweetnam, G. Szepesi, M. Takechi, T. Tala, K. Tanaka, X. Tang, S. Tang, Y. Tao, R. Tao, D. Taussig, T. Taylor, K. Teixeira, K. Teo, A. Theodorsen, D. Thomas, K. Thome, A. Thorman, A. Thornton, A. Ti, M. Tillack, N. Timchenko, R. Tinguely, R. Tompkins, J. Tooker, A. Torrezan De Sousa, G. Trevisan, S. Tripathi, A. Trujillo Ochoa, D. Truong, C. Tsui, F. Turco, A. Turnbull, M. Umansky, E. Unterberg, P. Vaezi, P. Vail, J. Valdez, W. Valkis, B. Van Compernolle, J. Van Galen, R. Van Kampen, M. Van Zeeland, G. Verdoolaege, N. Vianello, B. Victor, E. Viezzer, S. Vincena, M. Wade, F. Waelbroeck, J. Wai, T. Wakatsuki, M. Walker, G. Wallace, R. Waltz, W. Wampler, L. Wang, H. Wang, Y. Wang, H. Wang, Z. Wang, H. Wang, Z. Wang, Y. Wang, G. Wang, S. Ward, M. Watkins, J. Watkins, W. Wehner, Y. Wei, M. Weiland, D. Weisberg, A. Welander, A. White, R. White, S. Wiesen, R. Wilcox, T. Wilks, M. Willensdorfer, H. Wilson, A. Wingen, M. Wolde, M. Wolff, K. Woller, A. Wolz, H. Wong, S. Woodruff, M. Wu, Y. Wu, S. Wukitch, G. Wurden, W. Xiao, R. Xie, Z. Xing, X. Xu, C. Xu, G. Xu, Z. Yan, X. Yang, S. Yang, T. Yokoyama, R. Yoneda, M. Yoshida, K. You, T. Younkin, J. Yu, M. Yu, G. Yu, Q. Yuan, L. Zaidenberg, L. Zakharov, A. Zamengo, S. Zamperini, M. Zarnstorff, E. Zeger, K. Zeller, L. Zeng, M. Zerbini, L. Zhang, X. Zhang, R. Zhang, B. Zhang, J. Zhang, J. Zhang, L. Zhao, B. Zhao, Y. Zheng, L. Zheng, B. Zhu, J. Zhu, Y. Zhu, Y. Zhu, M. Zsutty, M. Zuin

Summary: DIII-D physics research addresses critical challenges for the operation of ITER and the next generation of fusion energy devices by focusing on innovations for high performance long pulse operation and fundamental plasma physics understanding. The research has led to substantial improvements in off-axis current drive efficiency and Alfven eigenmode control, as well as validated models for pedestal recovery after ELMs and disruption mitigation techniques. The findings provide confidence in optimizing future tokamak operation and handling disruptivity.

NUCLEAR FUSION (2022)

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Review Infectious Diseases

Genetic diversity of Echinococcus granulosus sensu lato in China: Epidemiological studies and systematic review

Rui-Qi Hua, Xiao-Di Du, Xue He, Xiao-Bin Gu, Yue Xie, Ran He, Jing Xu, Xue-Rong Peng, Guang-You Yang

Summary: Cystic echinococcosis (CE) is a major public health concern globally, with unique genetic diversity in China. The genetic composition of E. granulosus s.l. in China is mainly G1 and G3, with G1 being the most common genotype, predominantly found in sheep and yaks. Surveillance and research on other potential host species, such as pigs, cattle, goats, and camels, have been largely overlooked in China.

TRANSBOUNDARY AND EMERGING DISEASES (2022)

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Article Physics, Fluids & Plasmas

Modelling the Alfv ′en eigenmode induced fast-ion flow measured by an imaging neutral particle analyzer

J. Gonzalez-Martin, X. D. Du, W. W. Heidbrink, M. A. Van Zeeland, K. Saerkimaeki, A. Snicker, X. Wang, Y. Todo

Summary: An imaging neutral particle analyzer (INPA) was used to diagnose fast-ion flow driven by multiple marginally unstable Alfv ’en eigenmodes (AEs) in the DIII-D tokamak. Traditional energetic particle diffusivity modeling failed to interpret the observed fast ion depletion, while self-consistent multi-phase hybrid simulations were able to reproduce most features of the observed phase-space flow.

NUCLEAR FUSION (2022)

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Article Chemistry, Multidisciplinary

A Novel Tri-Layer Cellulose-Based Membrane for the Capture and Analysis of Mainstream Smoke of Tobacco

Xuyan Song, Min Wei, Yunlu He, Xi Pan, Xinjiao Cui, Xiaodi Du, Junsheng Li

Summary: The study introduces a low-cost alternative to the standard Cambridge filter pad (CFP) for capturing particulate matter in mainstream smoke. The alternative filter is composed of a cellulose acetate fiber (CAF) interlayer and two cotton fiber (CF) layers, showing improved trapping performance and high affinity towards tobacco additives. This cost-effective CF/CAF/CF filter can potentially replace the CFP.

APPLIED SCIENCES-BASEL (2022)

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Article Physics, Fluids & Plasmas

Modeling of thermal-ion-driven internal kink in DIII-D high-Ti plasmas

Yueqiang Liu, Weichao Xie, Xiaodi Du

Summary: Toroidal modeling using MARS-K code reveals the presence of multiple branches of unstable internal kink modes triggered by the bounce resonance of trapped thermal ions in a high-performance DIII-D discharge. Plasma toroidal flow and resistivity play crucial roles in stabilizing or destabilizing these modes.

NUCLEAR FUSION (2022)

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Article Biochemistry & Molecular Biology

Controlled Thermal Release of L-Menthol with Cellulose-Acetate-Fiber-Shelled Metal-Organic Framework

Xinjiao Cui, Donghao Ye, Jiankun Wei, Xiaodi Du, Pengzhao Wang, Junsheng Li

Summary: This research developed a novel composite fragrance carrier with MIL-101 (Cr) as the fragrance host and cellulose acetate fiber (CAF) as the protective shell. The encapsulation effect of MIL-101 (Cr) and the protective function of the CAF shell significantly improved the storage stability of fragrance and enabled thermal triggered release.

MOLECULES (2022)

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Article Physics, Fluids & Plasmas

Mode structure measurements of ion cyclotron emission and sub-cyclotron modes on DIII-D

G. H. DeGrandchamp, J. B. Lestz, M. A. Van Zeeland, X. D. Du, W. W. Heidbrink, K. E. Thome, N. A. Crocker, R. Pinsker

Summary: This study reports on mode structure measurements of coherent ion cyclotron emission (ICE) and sub-cyclotron modes on the DIII-D device. In L-mode plasmas, resonant peaks at harmonics of the ion cyclotron frequency were observed in the core of the plasma. Sub-cyclotron modes were also observed in L-mode plasmas when the toroidal magnetic field strength was lowered. In H-mode plasmas, ICE harmonics localized to the plasma edge were observed. Polarization estimates indicate compressional polarization at the plasma edge for both ICE and sub-cyclotron modes. The same harmonics were observed on both the centerpost and outer wall loops, indicating poloidal extension of ICE. Toroidal mode numbers were calculated for both core ICE and sub-cyclotron modes in L-mode plasmas.

NUCLEAR FUSION (2022)

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Article Physics, Fluids & Plasmas

Energetic particle-induced geodesic acoustic modes on DIII-D

D. J. Lin, W. W. Heidbrink, N. A. Crocker, X. D. Du, R. Nazikian, M. A. Van Zeeland, K. Barada

Summary: This study explores various properties of the energetic particle-induced geodesic acoustic mode (EGAM) using a large database analysis of DIII-D experimental data. The analysis reveals that EGAMs are most easily destabilized by counter plasma current beams and the mode frequency has a strong linear dependence on the safety factor. The stability of the mode is found to depend more on damping rate than on fast-ion drive.

NUCLEAR FUSION (2022)

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Article Physics, Fluids & Plasmas

Parametric study of Alfvenic instabilities driven by runaway electrons during the current quench in DIII-D

A. Lvovskiy, C. Paz-Soldan, N. W. Eidietis, A. Dal Molin, G. H. DeGrandchamp, E. M. Hollmann, J. B. Lestz, C. Liu, M. Nocente, D. Shiraki, X. D. Du

Summary: The dependencies of Alfvenic instabilities driven by runaway electrons (REs) during current quench in DIII-D on plasma and material injection parameters were investigated. The observed instabilities in the frequency range of 0.1-3 MHz are correlated with increased RE loss and may play a role in non-sustained RE beams.

NUCLEAR FUSION (2023)

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Article Physics, Fluids & Plasmas

Visualization of fast ion phase-space flow in plasmas well-below, near and well-above Alfven eigenmode stability threshold in tokamak

X. D. Du, W. W. Heidbrink, M. A. Van Zeeland, J. Gonzalez-Martin, M. E. Austin, Z. Yan, G. R. McKee

Summary: Transport of fast ions in plasma is studied at different regimes below, near, and above the Alfvén eigenmode stability threshold. Below the threshold, fast ions are well-confined without noticeable transport. Near the threshold, fast ions exhibit transport through AE-driven flow along streamlines. Above the threshold, fast ions show strong critical gradient behavior with prompt transport along streamlines.

NUCLEAR FUSION (2023)

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Article Parasitology

Molecular characterization and immunological properties of Echinococcus granulosus sensustricto (G1) ADK1 and ADK8

Hong-Yu Song, Jia-Fei Zhan, Rui-Qi Hua, Xue He, Xiao-Di Du, Jing Xu, Ran He, Yue Xie, Xiao-Bin Gu, Xue-Rong Peng, Guang-You Yang

Summary: In this study, EgADK1 and EgADK8 were cloned and expressed, and their roles in the growth and development of E. granulosus were investigated. However, they are not suitable as candidate antigens for the diagnosis of cystic echinococcosis (CE) due to their recognition by other parasite-positive sera.

PARASITOLOGY RESEARCH (2023)

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Article Engineering, Environmental

Polyethyleneimine-assisted synthesis of ionic liquid-derived Mo-based mesoporous TiO2 composite with superior oxidative desulfurization activity

Yue Du, Jiacheng Hu, Yongxu Jin, Yisi Liu, Qiyun Pan, Kai Wang, Lina Zhou, Zhenhui Liu, Xiaodi Du

Summary: A new solvent-free strategy for synthesizing mesoporous metal-based ionic liquid/TiO2 composite has been developed in this study, showing excellent performance in catalytic oxidation reaction to remove organic sulfur compounds effectively from model fuel.

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING (2022)

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