Some nanograined ferrites and perovskites for catalytic combustion of acetone at low temperature

Rezlescu, N.; Rezlescu, E.; Popa, P.D.; Doroftei, C.; Ignat, Maria

doi:10.1016/j.ceramint.2014.11.134

Cited by 33 publications

(18 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Catalyst activity tests were performed at atmospheric pressure, in a laboratory scale with a ow type set-up (ow rate of 100 cm 3 min À1 , propane concentration in air of 1-2& and the gas hourly space velocity, GHSV, of 5100 h À1 ), previously described in ref. 30. The catalyst powder (0.3-0.5 g) was sandwiched between two layers of quartz wool in a quartz tubular microreactor (f ¼ 7 mm) placed in an electric furnace.…”

Section: Catalytic Activity Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis and characterization of some nanostructured composite oxides for low temperature catalytic combustion of dilute propane

Doroftei

Leontie

2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

Section: Catalytic Activity Measurementsmentioning

confidence: 99%

“…Some of these results were published in previous articles. 30,40 Results showing the temperature dependence of propane conversion in its combustion reaction over all catalysts are presented in Fig. 6.…”

Section: Catalytic Activitymentioning

confidence: 99%

Synthesis and characterization of some nanostructured composite oxides for low temperature catalytic combustion of dilute propane

Doroftei

Leontie

2017

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…MnAl‐LDO had the highest catalytic activity, with the 50% acetone conversion temperature (T 50% ) at 170 °C, and 90% acetone conversion temperature (T 90% ) at 200 °C. MnAl‐LDO appeared to be a more effective catalyst than the ferrites and perovskites catalysts reported by Rezlescu et al . CoAl‐LDO had noticeable catalytic activity, with T 50% = 198 °C and T 90% = 220 °C.…”

Section: Resultsmentioning

confidence: 99%

“…Figure 4(A) compares the performance of MgAl-, NiAl-, CoAl-and MnAl-LDO as catalysts in acetone oxidation. MnAl-LDO had the highest catalytic activity, with the 50% acetone conversion temperature (T 50% ) at 170 ∘ C, and 90% acetone conversion temperature (T 90% ) at 200 ∘ C. MnAl-LDO appeared to be a more effective catalyst than the ferrites and perovskites wileyonlinelibrary.com/jctb 46 CoAl-LDO had noticeable catalytic activity, with T 50% = 198 ∘ C and T 90% = 220 ∘ C. NiAl-LDO and MgAl-LDO also showed good catalytic activity with T 50% = 244 ∘ C and T 90% = 275 ∘ C for NiAl-LDO, and T 50% = 320 ∘ C and T 90% = 355 ∘ C for MgAl-LDO. The CO 2 generation of these LDOs adopted a similar trend to their catalytic activity as shown in Fig.…”

Section: Catalytic Activity Of Ldosmentioning

confidence: 99%

The effect of cerium incorporation on the catalytic performance of cobalt and manganese containing layer double oxides for acetone oxidation

Zhao

Liu

Han

et al. 2018

J of Chemical Tech & Biotech

View full text Add to dashboard Cite

Background Acetone is a volatile organic compound (VOC) that is often associated with poor air quality. Acetone has chronic toxicity towards humans and has a significant impact on the overall atmospheric air quality. In this study, several layer double oxides (with M2+ = Mg, Ni, Co or Mn and M3+ = Al or Ce) were tested as catalysts for acetone oxidation. Results MnAl‐LDO was found to be the most efficient catalyst. 50% acetone conversion was achieved at 170 °C (T50%) and 90% conversion at 200 °C (T90%).The incorporation of Ce on MnCeAl‐LDO did not improve its catalytic properties over MnAl‐LDO (the T50% for MnCeAl‐LDO was 12 °C higher than for MnAl‐LDO). The good performance on MnAl‐LDO was due to the presence of Mn3+ and the low reduction temperature. MnAl‐LDO was not affected when water was introduced into the catalytic reaction setup. Less than 5% fluctuation in the acetone conversion rate at 170 and 200 °C was detected in the presence of 5.5% water. The incorporation of Ce on CoCeAl‐LDO improved its catalytic performance over CoAl‐LDO (T50% of CoCeAl‐LDO was 15 °C lower than CoAl‐LDO). Our results showed that the good catalytic performance of CoCeAl‐LDO was ascribed to the increased Co2+/Co3+ ratio and the abundance of lattice oxygen (Olatt). Conclusion MnAl‐LDO has good catalytic properties for acetone oxidation, even under humid conditions. The LDO catalysts tested here can be developed into efficient catalysts for acetone oxidation and serve as functional materials for the reduction in acetone or VOC emission. © 2018 Society of Chemical Industry

show abstract

“…Volatile organic compounds (VOCs), particularly aromatic hydrocarbons, are typical pollutants that are emitted during industrial processes, and automobile exhaust emissions are recognized as major contributions to air pollution because of their toxic properties and involvement in the formation of photochemical smog (Rezlescu et al 2015;Qiao et al 2011). Among the many available technologies to control VOCs, the catalytic oxidation of these compounds to CO 2 and H 2 O has been recognized as one of the most promising methods because of the lower NO x , CO, and unburned-hydrocarbon emissions and the higher energy efficiency (Yang et al 2015;Li et al 2004;Castaño et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Combined promoting effects of low-Pd-containing and Cu-doped LaCoO3 perovskite supported on cordierite for the catalytic combustion of benzene

Chen

Niu

et al. 2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

The catalytic activities for benzene oxidation and resistance to SO2 poisoning were tested for a series of Pd/La-Cu-Co-O/cordierite catalysts, which were prepared using a multiple-step impregnation method. The XRD, SEM, and IR characterization techniques were performed to investigate the relationship between the catalytic performance and its physicochemical properties. When Pd/La-Cu-Co-O/cordierite catalysts with Pd loadings of 0.06 and 0.08 % were prepared at a calcination temperature of 500 °C for 5 h, they exhibited similar catalytic activity and sulfur resistance. When the concentration of benzene was 1500 ppm and the GHSV was 20000 h(-1), the benzene conversion was above 95 % at a reaction temperature of 350 °C in SO2 existing at 100 ppm. These results were mainly attributed to the cooperation between La-Cu-Co-O perovskite and the noble metal Pd. Specifically, the addition of copper can strengthen the catalytic activity of La-Co-O/cordierite catalysts by decreasing the crystalline size of the active ingredients. A moderate Pd addition can drastically improve the sulfur resistance and further improve the catalytic activity of the La-Cu-Co-O/cordierite catalyst.

show abstract

Some nanograined ferrites and perovskites for catalytic combustion of acetone at low temperature

Cited by 33 publications

References 53 publications

Synthesis and characterization of some nanostructured composite oxides for low temperature catalytic combustion of dilute propane

Synthesis and characterization of some nanostructured composite oxides for low temperature catalytic combustion of dilute propane

The effect of cerium incorporation on the catalytic performance of cobalt and manganese containing layer double oxides for acetone oxidation

Combined promoting effects of low-Pd-containing and Cu-doped LaCoO3 perovskite supported on cordierite for the catalytic combustion of benzene

Contact Info

Product

Resources

About