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Ning Zhao
Chinese Academy of Sciences
51Publications
25H-index
2,047Citations
Publications 51
Newest
#1Changchun JiH-Index: 3
#2Xin HuangH-Index: 6
Last.Wei WeiH-Index: 50
view all 6 authors...
Recently, amine-functionalized materials as a prospective chemical sorbent for post combustion CO2 capture have gained great interest. However, the amine grafting for the traditional MCM-41, SBA-15, pore-expanded MCM-41 or SBA-15 supports can cause the pore volume and specific surface area of sorbents to decrease, significantly affecting the CO2 adsorption-desorption dynamics. To overcome this issue, hierarchical porous silica with interparticle macropores and long-range ordering mesopores was p...
#1Tiantian Zhang (CAS: Chinese Academy of Sciences)H-Index: 1
#2Bingsheng ZhangH-Index: 3
Last.Fukui Xiao (CAS: Chinese Academy of Sciences)H-Index: 22
view all 5 authors...
Abstract Zn/Mg catalysts with different atomic ratios of zinc to magnesium were prepared via urea–precipitation. The products were characterized by XRD, BET, SEM, CO 2 -TPD, and ICP. Compared with pure ZnO, the mixed oxide possessed appropriate alkaline density and high specific surface area. The catalyst with Zn/Mg of 1:4 exhibited high catalytic activity within 30 min and reliable production for propylene carbonate (PC) (94.8%). It was found that the PC yield was strongly related to the amount...
#1Xi Jiao (CAS: Chinese Academy of Sciences)H-Index: 5
#2Hongguang Li (CAS: Chinese Academy of Sciences)H-Index: 17
Last.Wei Wei (CAS: Chinese Academy of Sciences)H-Index: 50
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Mesoporous MgAl(O) sorbents with different Mg/Al molar ratios (0, 0.5, 1.0, 1.5) were synthesized via a one-step surfactant assisted precipitation method. The structural properties of these sorbents were systematically characterized by XRD, SEM, FT-IR, N2 adsorption–desorption and CO2-TPD. The CO2 adsorption–desorption performance of the sample was studied in a fixed-bed reactor. The results showed that the xMgAl(O) sorbents possessed a mesoporous structure, high specific surface areas and abund...
#1Peng Gao (CAS: Chinese Academy of Sciences)H-Index: 20
#2Feng Li (CAS: Chinese Academy of Sciences)H-Index: 5
Last.Yuhan Sun (CAS: Chinese Academy of Sciences)H-Index: 55
view all 7 authors...
Abstract A series of promoted Cu/Zn/Al catalysts derived from hydrotalcite-like precursors were synthesized by co-precipitation method and tested for the CO 2 hydrogenation to methanol. The influence of modifier (Mn, La, Ce, Zr and Y) on the physicochemical properties of Cu/Zn/Al catalysts was studied in detail. The results show that the BET specific surface area, Cu surface area and Cu dispersion increase in the order of Cu/Zn/Al 2 conversion depends on the exposed Cu surface area and the CH 3 ...
#1Lei LiH-Index: 11
#2Bingsheng ZhangH-Index: 3
Last.Yuhan SunH-Index: 55
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A novel sorbent, MgO/Al2O3-supported K2CO3, for CO2 sorption was prepared. It was found that the sorbent prepared by the multi-impregnation method showed a large CO2 capture capacity at low temperature under simulated flue gases with MgO loading of 10 and 20 wt % (KMgAlI3010 and KMgAlI3020). The presence of water vapor pretreatment and MgO loadings had different effects on the CO2 adsorption mechanisms. For the KMgAlI3010 sorbent, the main phase was KHCO3 after CO2 adsorption. While for the KMgA...
#1Peng Gao (CAS: Chinese Academy of Sciences)H-Index: 20
#2Feng Li (CAS: Chinese Academy of Sciences)H-Index: 5
Last.Yuhan Sun (CAS: Chinese Academy of Sciences)H-Index: 55
view all 8 authors...
Abstract Fluorine-modified Cu/Zn/Al catalyst was prepared by calcination of the fluorine-containing Cu/Zn/Al hydrotalcite-like precursor and tested for CO 2 hydrogenation to methanol. The introduction of fluorine into Cu/Zn/Al catalyst led to lower CO 2 conversion mainly due to the decrease of the exposed copper surface area. However, the turnover frequency increased remarkably owing to the higher amount of easily reducible CuO. In addition, the CH 3 OH selectivity was greatly improved by the re...
#1Lei Li (CAS: Chinese Academy of Sciences)H-Index: 11
#2Ning Zhao (CAS: Chinese Academy of Sciences)H-Index: 25
Last.Yuhan Sun (CAS: Chinese Academy of Sciences)H-Index: 55
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Abstract This article reviews the progress made in CO 2 capture, storage, and utilization in Chinese Academy of Sciences (CAS). New concepts such as adsorption using dry regenerable solid sorbents as well as functional ionic liquids (ILs) for CO 2 capture are thoroughly discussed. Carbon sequestration, such as geological sequestration, mineral carbonation and ocean storage are also covered. The utilization of CO 2 as a raw material in the synthesis of chemicals and liquid energy carriers which o...
#1Yong Li (CAS: Chinese Academy of Sciences)H-Index: 57
#2Xia Wen (CAS: Chinese Academy of Sciences)H-Index: 7
Last.Yuhan Sun (CAS: Chinese Academy of Sciences)H-Index: 55
view all 8 authors...
A one-pot template-free route was developed for the synthesis of novel tetraethylenepentamine modified porous silica as CO2 adsorbents, the obtained materials were characterized by N2 adsorption/desorption, thermogravimetry, elemental analysis, Fourier transform infrared spectrometry,scanning electron microscopy and transmission electron microscopy. It was found that the amine species were inserted into the silica skeleton, which considerably enhanced their dispersion. Compared with similar mate...
#1Yong LiH-Index: 57
#2Nannan SunH-Index: 17
Last.Wei HuangH-Index: 88
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SBA-15 prepared via ethanol extraction for template removing was grafted with three kinds of amine precursors (mono-, di-, tri-aminosilanes) to synthesis new CO2 adsorbents. The SBA-15 support and the obtained adsorbents were characterized by X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), N2 adsorption/desorption, thermogravimetry (TG), elemental analysis, Fourier transform infrared (FTIR) spectrometry, scanning electron microscopy (SEM) and transmission electron microscopy (TEM)....
#1Peng Gao (CAS: Chinese Academy of Sciences)H-Index: 20
#2Feng Li (CAS: Chinese Academy of Sciences)H-Index: 5
Last.Yuhan Sun (CAS: Chinese Academy of Sciences)H-Index: 55
view all 9 authors...
Abstract A series of Cu/Zn/Al/Zr hydrotalcite-like precursors with Zr 4+ :(Al 3+ +Zr 4+ ) from 0 to 0.7 were synthesized by a co-precipitation method. X-ray diffraction and thermogravimetric measurements demonstrated that the yield of the hydrotalcite-like phase decreases with increased Zr content. The Cu/Zn/Al/Zr mixed oxides were then obtained by calcination of the hydrotalcite-like precursors and tested for methanol synthesis from CO 2 hydrogenation. With increased Zr 4+ :(Al 3+ +Zr 4+ ) atom...
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