Selective Catalytic Reduction of NO with NH3 on SO−24/TiO2 Superacid Catalyst

Chen, J.P.; Yang, Ralph T.

doi:10.1006/jcat.1993.1023

Cited by 231 publications

(63 citation statements)

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“…TiO 2 nanomaterial is extensively used in industrial areas ranging from photovoltaics and photocatalysis [52,[77][78][79][80][81][82][83][84] to photo-/electrochromics, sensors [85][86][87][88], photo-conductor [89], as additives in plastics, pigments [90], agglomerates for thermal sprays, attenuation of ultraviolet light (UV protection), catalysts and catalyst [91,92], dye-sensitized solar cells [85,93,94], sunscreens [95,96], paints [97], ointments, toothpaste [98], water splitting [99,100], electrode materials in lithium batteries, energy converter in solar cells, inorganic pollutants and antimicrobial applications [101], piezoelectric capacitors, solid oxide fuel cell, bio-terrorism, nanomembrane [76] and TiO 2 -oligonucleotide nanocomposite for gene therapy [102,103], etc. …”

Section: Titanium Dioxide Nanoparticlesmentioning

confidence: 99%

Mechanical properties of epoxy nanocomposites using titanium dioxide as reinforcement – A review

Pinto

Bernardo

Amaro

et al. 2015

Construction and Building Materials

141

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Section: Titanium Dioxide Nanoparticlesmentioning

confidence: 99%

Mechanical properties of epoxy nanocomposites using titanium dioxide as reinforcement – A review

Pinto

Bernardo

Amaro

et al. 2015

Construction and Building Materials

141

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“…Doublet sulfate IR peaks of TiO 2 were further analyzed with curve fitting software ( Figure 16 and Figure 17). A doublet peak can also be seen in Yang et al's work (Chen and Yang, 1993), although their IR peak around 1380 cm -1 is more intense than the one around 1401 cm -1 . Our results, on the other hand, show the IR peak around 1401 cm -1 to be more intense.…”

Section: Ftir Transient Issr Experimentsmentioning

confidence: 61%

NOx Control Options and Integration for US Coal Fired Boilers

Bockelie¹,

Davis²,

Linjewile³

et al. 2003

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This is the fourteenth Quarterly Technical Report for DOE Cooperative Agreement No: DE-FC26-00NT40753. The goal of the project is to develop cost effective analysis tools and techniques for demonstrating and evaluating low NO x control strategies and their possible impact on boiler performance for boilers firing US coals. The Electric Power Research Institute (EPRI) is providing co-funding for this program. Using the initial CFD baseline modeling of the Gavin Station and the plant corrosion maps, six boiler locations for the corrosion probes were identified and access ports have been installed. Preliminary corrosion data obtained appear consistent and believable.In situ, spectroscopic experiments at BYU reported in part last quarter were completed. New reactor tubes have been made for BYU's CCR that allow for testing smaller amounts of catalyst and thus increasing space velocity; monolith catalysts have been cut and a small reactor that can accommodate these pieces for testing is in its final stages of construction. A poisoning study on Ca-poisoned catalysts was begun this quarter. A possible site for a biomass co-firing test of the slipstream reactor was visited this quarter. The slipstream reactor at Rockport required repair and refurbishment, and will be re-started in the next quarter. This report describes the final results of an experimental project at Brown University on the fundamentals of ammonia / fly ash interactions with relevance to the operation of advanced NO x control technologies such as selective catalytic reduction. The Brown task focused on the measurement of ammonia adsorption isotherms on commercial fly ash samples subjected to a variety of treatments and on the chemistry of dry and semi-dry ammonia removal processes.iii Table of Our program contains five major technical tasks:• evaluation of Rich Reagent Injection (RRI) for in-furnace NO x control;• demonstration of RRI technologies in full-scale field tests at utility boilers;• impacts of combustion modifications (including corrosion and soot);• ammonia adsorption / removal from fly ash; and • SCR catalyst testing.To date, good progress is being made on the overall program. We have seen considerable interest from industry in the program due to our successful initial field tests of the RRI technology and the corrosion monitor.During the last three months, our accomplishments include the following:• Using the initial CFD baseline modeling of the Gavin Station and the plant corrosion maps, six boiler locations for the corrosion probes were identified and access ports have been installed.• One probe has been collecting data for more than three months and two others have been in service for more than two months; preliminary corrosion data obtained appear consistent and believable.• In situ, spectroscopic experiments at BYU reported in part last quarter were completed; the most significant finding of these investigations was a consistent indication that vanadium does not sulfate during SCR reaction in the presence of gas-phase SO 2 whil...

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“…It is generally understood that SO 2 improves SCR activities of CuO/Al 2 O 3 , V 2 O 5 /AC and V 2 O 5 /TiO 2 catalysts [12][13][14]. The above three catalysts, therefore, were subjected to SO 2 treatment, pre-sulfation, which was carried out in a gas stream containing 1700 ppm SO 2 , 5.4 vol% O 2 and about 3% H 2 O at 400°C until the outlet SO 2 concentrations were nearly equal to the inlet values.…”

Section: Resultsmentioning

confidence: 99%

Effect of SO2 on a cordierite honeycomb supported CuO catalyst for NO reduction by NH3

Liu

Xie

et al. 2005

Catal Lett

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Supporting CuO on a Al 2 O 3 -coated cordierite honeycomb yields a good catalyst (CuO/HC-Al) for selective catalytic reduction (SCR) of NO with NH 3 at 350-500°C. SO 2 has complex effects on the catalyst's activity. It significantly promotes the SCR activity through conversion of CuO to CuSO 4 , however, when a certain amount of CuO is converted, it slightly decreases the SCR activity through competitive adsorption with NH 3 . This competitive adsorption reduces the amount of NH 3 adsorbed on the catalyst surface, especially on the sites highly active to the SCR. It also prevents transformation of CuO to CuSO 4 and as a result, the catalysts subjected to pre-sulfation and in situ sulfation show different SCR behaviors.

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Selective Catalytic Reduction of NO with NH3 on SO−24/TiO2 Superacid Catalyst

Cited by 231 publications

References 0 publications

Mechanical properties of epoxy nanocomposites using titanium dioxide as reinforcement – A review

Mechanical properties of epoxy nanocomposites using titanium dioxide as reinforcement – A review

NOx Control Options and Integration for US Coal Fired Boilers

Effect of SO2 on a cordierite honeycomb supported CuO catalyst for NO reduction by NH3

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