Oxidation behaviors of Hongqian heavy crude oil characterized by TG-DSC-FTIR-MS within full temperature regions

Wang, Liangliang; Wang, Tengfei; Zhang, Yao; Peng, Xiaoqiang; Song, Wei; Yang, Jinshun; Yuan, Chengdong

doi:10.1016/j.fuel.2023.129242

Cited by 11 publications

(1 citation statement)

References 76 publications

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“…Thermogravimetric and differential scanning calorimetry (TG-DSC) curves in Figure 4 are used to describe the mass change in BTA composites with increasing temperature [39,40]. Evaporation, phase transition, and chemical reactions are the primary factors contributing to the decrease in sample mass.…”

Section: Tg-dsc Analysismentioning

confidence: 99%

Visible-Light-Driven BiOBr-TiO2-Attapulgite Photocatalyst with Excellent Photocatalytic Activity for Multiple Xanthates

Qi,

Zhao,

Jiang

et al. 2023

Catalysts

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The novel ternary composites BiOBr-TiO2-attapulgite (BTA) were synthesized using a simple hydrothermal and water-bath method, exhibiting excellent photocatalytic performance to multiple xanthates. For the BTA photocatalyst, TiO2 and BiOBr were uniformly loaded onto the surface of acid-activated attapulgite. As a widely used collector in mining processes, sodium ethyl-xanthate (SEX) was selected as the target pollutant due to its high toxicity. The BTA ternary photocatalyst demonstrated significantly higher adsorption and photocatalytic degradation performance compared to TiO2 nanoparticles, BiOBr nanosheets, and BiOBr-TiO2 heterojunction. Structural characterization and experimental results indicated that the exceptional photocatalytic degradation efficiency of BTA was mainly attributed to the formation of a heterojunction between BiOBr and TiO2, as well as the presence of additional active adsorption sites provided by attapulgite. Free radical scavenging experiments and EPR results confirmed that the photogenerated holes were the predominant active species in photodegrading SEX throughout the entire experiment. The LC-MS results provided insight into potential degradation pathways of SEX. This research demonstrates that BTA, as a novel triple composite material, achieves rapid and complete degradation to 20 mg/L SEX within 20 min. This work presents a novel approach to synthesize mineral-based photocatalysts, which have broad prospects for application in flotation wastewater treatment.

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Section: Tg-dsc Analysismentioning

confidence: 99%