Characterization of Co/Silica Catalysts Prepared by a Novel NO Calcination Method

2009 ◽  
Author(s):  
Gary Jacobs ◽  
Yaying Ji ◽  
Syed Khalid ◽  
Wenping Ma ◽  
Burtron Davis
Keyword(s):  
Calcination Method

scholarly journals Preparation and Characterization of Rh/MgSNTs Catalyst for Hydroformylation of Vinyl Acetate: The Rh0 was Obtained by Calcination

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 215 ◽  
Author(s):  
Penghe Su ◽  
Ya Chen ◽  
Xiaotong Liu ◽  
Hongyuan Chuai ◽  
Hongchi Liu ◽  
...  
Keyword(s):  
Vinyl Acetate ◽  
Atomic Emission ◽  
Catalytic Performance ◽  
Bet Surface Area ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Atomic Emission Spectrometer ◽  
Calcination Method

A simple and practical Rh-catalyzed hydroformylation of vinyl acetate has been synthesized via impregnation-calcination method using silicate nanotubes (MgSNTs) as the supporter. The Rh0 (zero valent state of rhodium) was obtained by calcination. The influence of calcination temperature on catalytic performance of the catalysts was investigated in detail. The catalysts were characterized in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectrometer (XPS), atomic emission spectrometer (ICP), and Brunauer–Emmett–Teller (BET) surface-area analyzers. The Rh/MgSNTs(a2) catalyst shows excellent catalytic activity, selectivity and superior cyclicity. The catalyst could be easily recovered by phase separation and was used up to four times.

Preparation and characterization of composite magnetic photocatalyst MnxZn1−xFe2O4/β-Bi2O3

RSC Advances ◽  
2015 ◽  
Vol 5 (97) ◽  
pp. 79997-80004 ◽  
Author(s):  
Zhaodi Zhang ◽  
Longjun Xu ◽  
Chenglun Liu
Keyword(s):  
Zinc Ferrite ◽  
Magnetic Photocatalyst ◽  
Manganese Zinc ◽  
Manganese Zinc Ferrite ◽  
Magnetic Substrate ◽  
Calcination Method

Composite magnetic photocatalyst MnxZn1−xFe2O4/β-Bi2O3 was synthesized by a dip-calcination method using manganese zinc ferrite as a magnetic substrate.

Synthesis and Characterization of Ultrafine CeO2 Nanoparticles with Photocatalytic Antibacterial Property

2014 ◽  
Vol 636 ◽  
pp. 153-155
Author(s):  
Xue Bin Xue ◽  
Shi Long Wu ◽  
Xiu Quan Xu ◽  
Jing Bo Xu ◽  
Ye Ping Li ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Antibacterial Property ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Calcination Method

Ultrafine CeO2 nanoparticles were prepared through a calcination method. The photocatalyst was characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM). The performance of photocatalytic antibacterial was investigated by inactivation of E.coli. and S.aureus.

scholarly journals Fabrication and Characterization of a Novel Composite Magnetic Photocatalyst β-Bi2O3/BiVO4/MnxZn1−xFe2O4 for Rhodamine B Degradation under Visible Light

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 797 ◽  
Author(s):  
Yong Cheng ◽  
Yahan Yang ◽  
Zao Jiang ◽  
Longjun Xu ◽  
Chenglun Liu
Keyword(s):  
Visible Light ◽  
Rhodamine B ◽  
Vital Role ◽  
Pollutant Degradation ◽  
Magnetic Photocatalyst ◽  
Decomposition Experiments ◽  
Calcination Method ◽  
Degradation Effect ◽  
Photo Decomposition

β-Bi2O3/BiVO4/MnxZn1−xFe2O4 (BV/MZF) composite magnetic photocatalyst was first synthesized using the hydrothermal and calcination method. BV/MZF was a mesoporous material with most probable pore size and specific surface area of 18 nm and 17.84 m2/g, respectively. Due to its high saturation magnetization (2.67 emu/g), the BV/MZF composite can be easily separated and recovered from solution under an external magnetic field. The results of photo-decomposition experiments show that the decomposition rate of Rhodamine B (RhB) by BV/MZF can reach 92.6% in 3 h under visible light. After three cycles, BV/MZF can still maintain structural stability and excellent pollutant degradation effect. In addition, analysis of the photocatalytic mechanism of BV/MZF for RhB shows that the p-n heterojunction formed in BV/MZF plays a vital role in its photocatalytic performance. This work has potential application in the future for solving environmental pollution.

scholarly journals CHARACTERIZATION OF CALCIUM (Ca) BY USING SPECTROFOTOMETER UV-Vis FROM SIRIHLIME WITH CALCINATION METHODS OF MANGROVE CLAMSHELL IN KETAPANG

2020 ◽  
Vol 11 (1) ◽  
pp. 25
Author(s):  
Trian Adimarta ◽  
M Nopriyanti
Keyword(s):  
Solid Waste ◽  
Hot Water ◽  
Calcination Process ◽  
A Value ◽  
Calcination Method

Clamshell is a solid waste generated by shells that are not utilized and cannot be consumed because they have hard properties. The purpose of this study was to determine the process of making sirihlime from mangrove shells using calcination method, characterizing calcium (Ca) using spectrophotometer UV-Vis.Method of making sirihlime from clamshell with calcination process. The calcination used was 1000oC for 3 hours, 800oC for 5 hours and 600oC for 7 hours. The results of the process of calcination of raw shells in the form of lime (CaO) and then added hot water to the Ca(OH)2 sirihlime was then characterized by calcium (Ca) using spectrophotometer UV-Vis 1800.Spectrofotometer UV-Vis of sirih lime demonstrated that maximum wavelength obtained is 529. The linier regression of the standart curve y = 1,021x + 1,6846 with a value of r2 = 0,7344. The calcium mineral from sirih lime at temperature 1000 oC for 3 hours an average of 1,536 mg/L, temperature 800oC for 5 hours an average of 2,2765 mg/L and temperature 600oC for 7 hours an average of 1,1159 mg/L. 

Synthesis and Characterization of g-C3N4/α-Fe2O3 Composites with Enhanced Photocatalytic Activity

2013 ◽  
Vol 575-576 ◽  
pp. 225-228 ◽  
Author(s):  
Li Ying Huang ◽  
Rong Xian Zhang ◽  
Xiu Juan Sun ◽  
Xiao Nong Cheng
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
High Efficiency ◽  
Synthesis And Characterization ◽  
X Ray Diffraction ◽  
Composite Photocatalyst ◽  
X Ray ◽  
Ft Ir ◽  
Calcination Method

A novel composite photocatalyst g-C3N4/α-Fe2O3 was prepared through calcination method. The photocatalysts were characterized by thermogravimetric analysis (TG), X-ray diffraction (XRD) and Fourier transform infrared spectroscopy (FT-IR). The obtained g-C3N4/α-Fe2O3 composites show high efficiency for the degradation of Rhodamine B (RHB). The optimum photocatalytic activity of g-C3N4/Fe2O3 at a g-C3N4 content of 8.6% under visible light irradiation is almost 4.8 times as high as that of pure α-Fe2O3. The enhancement in visible light photoactivity of g-C3N4/α-Fe2O3 composites was attributed to the introduction of g-C3N4 and the interaction between g-C3N4 and α-Fe2O3.

Sign in / Sign up

Export Citation Format

Share Document