Synthesis of TS-1 from an Inorganic Reactant System and Its Catalytic Properties for Allyl Chloride Epoxidation

2012 ◽  
Vol 51 (39) ◽  
pp. 12730-12738 ◽  
Author(s):  
Meng Wang ◽  
Jicheng Zhou ◽  
Guiyue Mao ◽  
Xianglan Zheng

2011 ◽  
Vol 52 (6) ◽  
pp. 793-797 ◽  
Author(s):  
S. M. Danov ◽  
A. V. Sulimov ◽  
V. A. Kolesnikov ◽  
A. V. Ovcharova


Author(s):  
Meng Liu ◽  
Jieqiong Li ◽  
Xingchi Chen ◽  
Jie Song ◽  
Wei Wei ◽  
...  


2014 ◽  
Vol 55 (6) ◽  
pp. 712-721 ◽  
Author(s):  
A. V. Sulimov ◽  
S. M. Danov ◽  
A. V. Ovcharova ◽  
A. A. Ovcharov ◽  
V. R. Flid


2021 ◽  
Vol 45 (1) ◽  
pp. 331-342
Author(s):  
Luoyi Ding ◽  
Jinpeng Yin ◽  
Wen Tong ◽  
Rusi Peng ◽  
Jingang Jiang ◽  
...  

The epoxidation of allyl chloride (ALC) to epichlorohydrin (ECH) with H2O2 using a piperidine (PI)-modified Ti-MWW catalyst (Ti-MWW-PI) in a continuous slurry reactor was investigated to develop an efficient reaction system for the corresponding industrial process.



2014 ◽  
Vol 112 (1) ◽  
pp. 267-282 ◽  
Author(s):  
Yi Lin ◽  
Yaquan Wang ◽  
Wenping Feng ◽  
Guoqiang Wu ◽  
Juan Xu ◽  
...  


Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1451
Author(s):  
Galina M. Kuz’micheva ◽  
Elena N. Domoroshchina ◽  
Galina V. Kravchenko

HZSM-5 (MFI type) of composition (Hx)[Al3+xSi12−xO24] × wH2O and nanocomposites NA/HZSM-5, NA:M/HZSM-5 (NA—nanoscale anatase; M = V, Ni, Ag) with Si/Al = 12, 25, 40, 300 (sp.gr. Pnma or P21/n; z = 8), as well as zeolites [(Ti4+xSi12−xO24] × wH2O (TS) with Si/Ti = 47, 53, 73.5 (sp.gr. Pnma) were studied by XRPD, XAS, FTIR-spectroscopy, BET, XPS, SEM, EDX, TPD, UV–VIS-spectroscopy, UV–DRS, and chemiluminescence methods. The results obtained together with photocatalytic, adsorption, antimicrobial, catalytic properties were analyzed using crystallochemical concepts and literature data. It was shown that NA or NA:M introduction into HZSM-5 leads, respectively, to the photodegradation of MeO dye in the UV region or difenoconazole in the visible range, and contributes to the appearance in the dark of adsorption (almost complete extraction of P(V), As(V), and Se(V) from aquatic environment) and bacteriostatic properties in respect to Staphylococcus epidermidis, Bacillus antracoides, and Escherichia coli for NA:Ag/HZSM-5(40, 300). The presence of titanium ions in NA nanoparticles on the HZSM-5 surface improves the catalytic activity in ethanol and propane (the best performance for NA/HZSM-5(25) and NA/HZSM-5(40), respectively) conversion. Determination of the composition (surface and bulk) and structure (statistical and local) of TS zeolites together with the found correlations made it possible to propose new catalysts in the reactions of propane, ethanol, and allyl chloride conversion.



Author(s):  
L.D. Schmidt ◽  
K. R. Krause ◽  
J. M. Schwartz ◽  
X. Chu

The evolution of microstructures of 10- to 100-Å diameter particles of Rh and Pt on SiO2 and Al2O3 following treatment in reducing, oxidizing, and reacting conditions have been characterized by TEM. We are able to transfer particles repeatedly between microscope and a reactor furnace so that the structural evolution of single particles can be examined following treatments in gases at atmospheric pressure. We are especially interested in the role of Ce additives on noble metals such as Pt and Rh. These systems are crucial in the automotive catalytic converter, and rare earths can significantly modify catalytic properties in many reactions. In particular, we are concerned with the oxidation state of Ce and its role in formation of mixed oxides with metals or with the support. For this we employ EELS in TEM, a technique uniquely suited to detect chemical shifts with ∼30Å resolution.



1986 ◽  
Vol 83 ◽  
pp. 619-621 ◽  
Author(s):  
F. Vergand ◽  
B. Iraqi ◽  
C. Bonnelle ◽  
E. Ramaroson ◽  
M.F. Guilleux ◽  
...  


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