SO42−–Mn–Co–Ce supported on TiO2/SiO2 with high sulfur durability for low-temperature SCR of NO with NH3

Qiu, Lirong; Wang, Yun; Pang, Dandan; Ouyang, Feng; Zhang, Changliang

doi:10.1016/j.catcom.2016.02.002

Cited by 29 publications

(13 citation statements)

References 17 publications

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“…The effect of the calcination temperature on the acidity of the sulfated catalyst was evaluated based on the amount of NH 3 uptake (Table 1). Generally, increasing the calcination temperature reduces the total acid sites of sulfated or phosphated solid acid catalysts [25,26]. Our results coincide with those reported.…”

Section: Catalyst Aciditysupporting

confidence: 92%

“…The yield of dimeric products from α-pinene (1) was the largest for the catalyst calcined at 550 • C (48.9 ± 1.2%), while almost no conversion to dimeric products and significantly lowered production were observed below and above this temperature, respectively. When we tried to correlate the yield of dimeric products with the amount of the total acid sites of catalysts, unlike previous papers [25,26], there was a large discrepancy in the calcination temperature range from 450 to 550 • C ( Table 1 and Figure 4). Although the catalyst calcined at 450 • C showed the highest NH 3 uptake, it was not able to furnish dimeric products at all.…”

Section: Catalyst Aciditymentioning

confidence: 91%

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Application of Sulfated Tin (IV) Oxide Solid Superacid Catalyst to Partial Coupling Reaction of α-Pinene to Produce Less Viscous High-Density Fuel

et al. 2019

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Brønsted acid-catalyzed reactions of α-pinene have been studied because of their ability to produce various types of fragrance molecules. Beyond this application, dimeric hydrocarbon products produced from coupling reactions of α-pinene have been suggested as renewable high-density fuel molecules. In this context, this paper presents the application of a sulfated tin(IV) oxide catalyst for the partial coupling reaction of α-pinene from turpentine. Brønsted acid sites inherent in this solid superacid catalyst calcined at 550 °C successfully catalyzed the reaction, giving the largest yield of dimeric products (49.6%) at 120 °C over a reaction time of 4 h. Given that the low-temperature viscosity of the mentioned dimeric products is too high for their use as a fuel in transportation engines, lowering the viscosity is an important avenue of study. Therefore, our partial coupling reaction of α-pinene provides a possible solution as a considerable amount of the isomers of α-pinene still remained after the reaction, which reduces the low-temperature viscosity. On the basis of a comparison of the reaction products, a plausible mechanism for the reaction involving coinstantaneous isomerization and coupling reaction of α-pinene was elucidated.

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Section: Catalyst Aciditysupporting

confidence: 92%

Section: Catalyst Aciditymentioning

confidence: 91%

Application of Sulfated Tin (IV) Oxide Solid Superacid Catalyst to Partial Coupling Reaction of α-Pinene to Produce Less Viscous High-Density Fuel

et al. 2019

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“…Notably, the (101) peak intensity assigning to TiO 2 is obviously decreased for the two acid-treated samples H-TiO 2 and H-PEDOT:PSS/TiO 2 , which suggests the low crystallinity of modified TiO 2 domain. [41,42] Raman spectroscopy is performed on the samples to further verify the existence of PEDOT:PSS in the hybrids. In the range of 50-1000 cm −1 (Figure S1, Supporting Information), all the samples exhibit a similar profile that can be assigned to anatase TiO 2 , indicating the exceptional good stability of TiO 2 backbone.…”

Section: Resultsmentioning

confidence: 99%

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Deng

Liu

et al. 2021

Small

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In order to satisfy the growing requirements of wearable electronic devices, 1D fiber‐shaped devices with outstanding sensitivity, flexibility, and stability are urgently needed. In this study, a novel inorganic‐organic heterojunction fibrous photodetector (FPD) based on poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and highly ordered TiO2 nanotube array is fabricated, which endows a high responsivity, large external quantum efficiency, and fast response speed at 3 V bias. To further ameliorate its performance in the self‐powered mode, a facile acid treatment is adopted and the assembled H‐PEDOT:PSS/TiO2 FPD demonstrates outstanding self‐powered properties with ≈3000% responsivity enhancement (161 mA W−1 at 0 V under 365 nm irradiation, photocurrent enhancement of ≈50 times) compared with the untreated device. It is found that the concentrated H2SO4 post‐treatment helps decrease the tube wall thickness of TiO2 and partially removes the insulated PSS component in PEDOT:PSS, leading to enhanced conductivity and facilitated charge transportation, and thereby superb responsivity/photocurrent enhancement of self‐powered H‐PEDOT:PSS/TiO2 FPD. This low‐cost and high‐performance self‐powered FPD shows high potential for applications in wearable electronic devices.

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“…15 28 Furthermore, SiO 2 is widely used as catalyst supports due to their high mechanical strength and excellent thermal stability. 29,30 TiO 2 is usually mixed with SiO 2 as the support to enhance the thermal stability and prevent the deactivating during exposure to SO 2 . 31 However, seldom studies focus on CeO 2 -WO 3 /TiO 2 -SiO 2 catalyst.…”

Section: Introductionmentioning

confidence: 99%

Effects of WO₃ and SiO₂ doping on CeO₂–TiO₂ catalysts for selective catalytic reduction of NO with ammonia

Fan

Wang

et al. 2020

RSC Adv.

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SO42−–Mn–Co–Ce supported on TiO2/SiO2 with high sulfur durability for low-temperature SCR of NO with NH3

Cited by 29 publications

References 17 publications

Application of Sulfated Tin (IV) Oxide Solid Superacid Catalyst to Partial Coupling Reaction of α-Pinene to Produce Less Viscous High-Density Fuel

Application of Sulfated Tin (IV) Oxide Solid Superacid Catalyst to Partial Coupling Reaction of α-Pinene to Produce Less Viscous High-Density Fuel

Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Effects of WO₃ and SiO₂ doping on CeO₂–TiO₂ catalysts for selective catalytic reduction of NO with ammonia

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SO42−–Mn–Co–Ce supported on TiO2/SiO2 with high sulfur durability for low-temperature SCR of NO with NH3

Cited by 29 publications

References 17 publications

Application of Sulfated Tin (IV) Oxide Solid Superacid Catalyst to Partial Coupling Reaction of α-Pinene to Produce Less Viscous High-Density Fuel

Application of Sulfated Tin (IV) Oxide Solid Superacid Catalyst to Partial Coupling Reaction of α-Pinene to Produce Less Viscous High-Density Fuel

Dramatic Responsivity Enhancement Through Concentrated H2SO4 Treatment on PEDOT:PSS/TiO2 Heterojunction Fibrous Photodetectors

Effects of WO3 and SiO2 doping on CeO2–TiO2 catalysts for selective catalytic reduction of NO with ammonia

Contact Info

Product

Resources

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Dramatic Responsivity Enhancement Through Concentrated H₂SO₄ Treatment on PEDOT:PSS/TiO₂ Heterojunction Fibrous Photodetectors

Effects of WO₃ and SiO₂ doping on CeO₂–TiO₂ catalysts for selective catalytic reduction of NO with ammonia