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| 1 | Synthesis of Bimodal Mesoporous TiO_(2)-PTA/BMMS and Its Enhanced Performance in the Photocatalytic Oxidative Desulfurization显示文摘With the bimodal mesoporous silica(BMMS)acting as the support and the composite of TiO2 with phosphotungstic acid(PTA)functioning as the active constituent,TiO_(2)-PTA/BMMS was synthesized by the two-step impregnation route.This catalyst was applied in the photocatalytic oxidative desulfurization(PODS)process,with dibenzothiophene serving as the model sulfur compound.PODS proceeds in one pot,in which H_(2)O_(2) acts as the oxidant and methanol plays the role of the solvent.TiO_(2)-PTA/BMMS was characterized by XRD,N_(2) adsorption and desorption,XRF,FTIR,UV-vis,SEM,EDS and TEM techniques.It showed that the introduction of PTA contributes higher order,higher surface area and pore volume to the bimodal mesoporous support.With TiO_(2)-PTA/BMMS used as the catalyst under the UV irradiation,the desulfurization rate can reach 99.6%.This result is obviously higher than that achieved by TiO_(2)/BMMS.The catalyst also has no significant drop in catalytic activity after eight runs of reusing.In such catalytic system,the synergistic effects of this photocatalytic oxidation and the extraction with the methanol serving as the solvent played an indispensable role. | Yang Lina Zhang Xi Cui Licheng Xu Meizhen Li Jian | 2021 | China Petroleum Processing & Petrochemical Technology2021，23，3： | 8 |
| 2 | Synergistic Effect between Zr-MOF and Phosphotungstic Acid for Oxidative Desulfurization显示文摘PTA/UiO-66 composites were successfully synthesized by the hydrothermal method.The results showed that the synergistic effect between phosphotungstic acid(PTA)and UiO-66 could enhance the oxidative desulfurization(ODS)activity.The XRD results proved that UiO-66 retained its structure in the PTA/UiO-66 composites.The SEM results showed that the PTA/UiO-66 catalysts exhibited regular octahedral shape.The Raman spectra revealed that PTA in the composites retained the Keggin structure.The XPS results showed that the electron transfer occurred from Zr-MOF to PTA.The ODS reaction mechanism was discussed.Electrons transfer from Zr-MOF to PTA can promote the generation of active species(·OH)and thus enhance the ODS activity.This explanation can be confirmed by the formation of oxygen vacancy and W0 as revealed by the XPS analysis. | Zong Mengya Zhao Yutong Fan Cunzheng Wang Danhong | 2020 | China Petroleum Processing & Petrochemical Technology2020，22，4： | 5 |
| 3 | Removal of Benzothiophene by Extraction with Deep Eutectic Solvents[Bmim]Br-Polyalcohol显示文摘Deep eutectic solvents(DESs)1-butyl-3-methylimidazolium bromide-polyalcohol([Bmim]Br-polyalcohol)were synthesized from[Bmim]Br and polyalcohol such as ethylene glycol(EG),propylene glycol(PG),glycerol(GL)at a molar ratio of 1:2.[Bmim]Br-2propylene glycol([Bmim]Br-2PG)was characterized with FT-IR spectroscopy and 1H NMR.The removal of benzothiophene(BT)from model oil was investigated by extraction with DES[Bmim]Br-2PG.The results showed that an extraction efficiency as high as 54.1%could be achieved with the solvent in one-stage extraction at 30℃in 30 min with a DES/oil mass ratio of 1:1.Deep desulfurization was realized after five-stage extraction,and sulfur content in model oil was reduced to less than 10μg/g.The used[Bmim]Br-2PG DES was regenerated and showed an extraction efficiency of 50.5%within four recycles. | Li Wenshen Ren Yongqi Li Jianxiang Hao Yuanbo Liu Jie | 2020 | China Petroleum Processing & Petrochemical Technology2020，22，3： | 1 |
| 4 | 基于二维VO_(x)纳米带超级电容器的印刷制备及性能研究显示文摘钒氧化物具有较高的理论比电容,是一种理想的电极材料,结合丝网印刷工艺制备电极,具有广阔的应用前景。鉴于此,本研究采用简易的溶剂热法一步获得具有混合价态的二维氧化钒(VO_(x))纳米带,探究制备工艺对电极性能的影响,组装纽扣超级电容器。测试分析结果表明,制得的VO_(x)具有典型的纳米带结构,长宽比约为5.5,存在V^(4+)和V^(5+)混合价态,有VO_(2)和V_(3)O_(7)·H_(2)O两种晶型,具有丰富的介孔结构,比表面积高达85.18m^(2)/g。在电化学性能测试中,得益于VO_(x)的带状结构和油墨通过丝网印刷后的规则性排列,当电流密度为0.5A/g时,经100目网版印刷的VO_(x)电极比电容可达213.1F/g,且历经5000次循环后比电容保持率仍有90.1%,远优于涂抹电极。此外,当电解液浓度为1.5mol/L,封装压力为1.25T时,VO_(x)对称型纽扣超级电容器表现出最佳的电化学性能,比电容和电容保持率分别为238.2F/g(0.5A/g电流密度)和88.9%(5000次充放电循环),当功率密度为412.5kW/kg时,最高能量密度可达90.1Wh/kg,优于部分文献报道的钒氧化物超级电容器。本研究以VO_(x)纳米带为电极材料,结合丝网印刷并组装后获得性能优异的超级电容器,可为印刷储能器件提供可供借鉴的思路。 | 唐文涛 王婧璐 郑茵茵 林宝莹 涂倩 邓亚峰 郭婷 陈良哲 | 2023 | 印刷与数字媒体技术研究2023，，5： | 0 |
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