Pyrolysis characteristic and mechanism of waste tyre: A thermogravimetry-mass spectrometry analysis

Han, Jun; Wei, Li; Liu, Dongyi; Qin, Linbo; Chen, Wangsheng; Xing, Futang

doi:10.1016/j.jaap.2017.12.016

Cited by 107 publications

(46 citation statements)

References 24 publications

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“…CO2 and C4+ selectivity were 2.0% and 74% during the simulated syngas (64% H2: 32% CO: balanced N2) FT over the Co/SBA-15 catalysts, and the CO conversion rate and CH4 selectivity were 10.8% and 15.7% after 100 h time on stream. The CO conversion was defined as Equation (3) and the product selectivity was calculated according to Equations (4). Here, F 0 and F were the flow rates of the feeding syngas and effluent gas, respectively, C 0 i and C i were i component concentrations of the feeding syngas and effluent gas, which can be quantitatively analyzed by GC.…”

Section: Discussionmentioning

confidence: 99%

“…The world's increasing energy demand and the depletion of crude oil has stimulated great interest in Fischer-Tropsch synthesis (FTS), which is a key step in transforming various non-petroleum carbon resources, such as natural gas, coal, and biomass into liquid fuels or valuable chemicals [1][2][3][4]. It is well known that Ni [5], Fe [6], Co [7], and Ru [8] are the most active metals for the hydrogenation of carbon monoxide.…”

Section: Introductionmentioning

confidence: 99%

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RETRACTED: The Influence of Texture on Co/SBA–15 Catalyst Performance for Fischer–Tropsch Synthesis

et al. 2018

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The influence of the Co/SBA-15 catalyst texture, such as pore size and pore length on Fischer-Tropsch (FT) Synthesis, was investigated in this paper. The morphology, structure, and microstructures of Co/SBA-15 catalysts were characterized by SEM, Brunauer-Emmett-Teller (BET), TPR, HRTEM, and XRD. The experimental results indicated that the increase of pore size could improve the activity of the Co/SBA-15 catalyst, and the further increase of pore size could not significantly promote the activity. Moreover, it was also found that the pore length of the Co/SBA-15 catalyst played a key role in the catalytic activity. CO 2 and C4+ selectivity were 2.0% and 74% during the simulated syngas (64% H 2 : 32% CO: balanced N 2 ) FT over the Co/SBA-15 catalysts, and CO conversion rate and CH 4 selectivity were 10.8% and 15.7% after 100 h time on stream.2 of 11 has uniform hexagonal channels and high thermal stability. The above features of SBA-15 lead to it being regarded as a suitable support for FTS catalyst [16]. Cai et al. and Wang et al. reported that the CO conversion was 6.51%-20.51%, and C 5+ selectivity was 42.43%-77.14% when Ru promoted Co/SBA-15 catalysts was used in FTS [17,18]. García et al. explored the effects of the Co-SiO 2 interaction, and thought that SBA could suppress the aggregation of metal particles and promote the metal dispersion [19].In this paper, the effect of the texture of Co/SBA-15 on FTS performance was investigated. Moreover, the reaction temperature and Co loading were also discussed. Results and DiscussionSEM images of SBA-15 are presented in Figure 1. SBA-15 consisted of aligned rod-like particles with a diameter of 1 µm and a length of 2-3 µm longwise, which coincided with the results of Prieto et al. [20]. It could be clearly observed from Figure 2 that SBA-15 had a well-ordered hexagonal crystal structure composed of one-dimensional channels, which was highly ordered and stable [21].Catalysts 2018, 8, x FOR PEER REVIEW 2 of 12

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

RETRACTED: The Influence of Texture on Co/SBA–15 Catalyst Performance for Fischer–Tropsch Synthesis

et al. 2018

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“…In-situ DRIFTS experiments were carried out in a FTIR spectrometer (FT-IR, Bruker Tensor II, Bruker optics Corp., Karlsruhe, Germany) equipped with an in-situ cell and a mercury-cadmium-telluride detector [34][35][36][37]. For the adsorption of NH 3 (or NO + O 2 ), the catalyst was exposed to a 20 mL/min NH 3 (or NO + O 2 ), which resulted in the variation with adsorption time of the DRIFT spectra, and argon purging was subsequently performed.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Mechanism and Performance of the SCR of NO with NH3 over Sulfated Sintered Ore Catalyst

Chen

Qin

et al. 2019

Catalysts

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A sulfated sintered ore catalyst (SSOC) was prepared to improve the denitration performance of the sintered ore catalyst (SOC). The catalysts were characterized by X-ray Fluorescence Spectrometry (XRF), Brunauer–Emmett–Teller (BET) analyzer, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and diffuse reflectance infrared spectroscopy (DRIFTS) to understand the NH3-selective catalytic reduction (SCR) reaction mechanism. Moreover, the denitration performance and stability of SSOC were also investigated. The experimental results indicated that there were more Brønsted acid sites at the surface of SSOC after the treatment by sulfuric acid, which lead to the enhancement of the adsorption capacity of NH3 and NO. Meanwhile, Lewis acid sites were also observed at the SSOC surface. The reaction between −NH2, NH 4 + and NO (E-R mechanism) and the reaction of the coordinated ammonia with the adsorbed NO2 (L-H mechanism) were attributed to NOx reduction. The maximum denitration efficiency over the SSOC, which was about 92%, occurred at 300 °C, with a 1.0 NH3/NO ratio, and 5000 h−1 gas hourly space velocity (GHSV).

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“…A mass loss of 70% of ST rubber occurred up to around 440 °C from which the thermal degradation stabilized, remaining around 30% of carbonaceous residue. The char still lost around 18% (a fraction of this loss is related to water release) of its mass up to 900 °C, indicating the presence of some unconverted carbon [28,29]. The mineral analysis of char (Table 2) revealed the presence of many metals and metalloids, but the high concentrations of zinc and silicon stood out.…”

Section: St Rubber and Char Characterizationmentioning

confidence: 99%

Char from Spent Tire Rubber: A Potential Adsorbent of Remazol Yellow Dye

Nogueira

Matos

Bernardo

et al. 2019

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A char produced from spent tire rubber showed very promising results as an adsorbent of Remazol Yellow (RY) from aqueous solutions. Spent tire rubber was submitted to a pyrolysis process optimized for char production. The obtained char was submitted to chemical, physical, and textural characterizations and, subsequently, applied as a low-cost adsorbent for dye (RY) removal in batch adsorption assays. The obtained char was characterized by relatively high ash content (12.9% wt), high fixed-carbon content (69.7% wt), a surface area of 69 m2/g, and total pore volume of 0.14 cm3/g. Remazol Yellow kinetic assays and modelling of the experimental data using the pseudo-first and pseudo-second order kinetic models demonstrated a better adjustment to the pseudo-first order model with a calculated uptake capacity of 14.2 mg RY/g char. From the equilibrium assays, the adsorption isotherm was fitted to both Langmuir and Freundlich models; it was found a better fit for the Langmuir model to the experimental data, indicating a monolayer adsorption process with a monolayer uptake capacity of 11.9 mg RY/g char. Under the experimental conditions of the adsorption assays, the char presented positive charges at its surface, able to attract the deprotonated sulfonate groups (SO3−) of RY; therefore, electrostatic attraction was considered the most plausible mechanism for dye removal.

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Pyrolysis characteristic and mechanism of waste tyre: A thermogravimetry-mass spectrometry analysis

Cited by 107 publications

References 24 publications

RETRACTED: The Influence of Texture on Co/SBA–15 Catalyst Performance for Fischer–Tropsch Synthesis

RETRACTED: The Influence of Texture on Co/SBA–15 Catalyst Performance for Fischer–Tropsch Synthesis

Mechanism and Performance of the SCR of NO with NH3 over Sulfated Sintered Ore Catalyst

Char from Spent Tire Rubber: A Potential Adsorbent of Remazol Yellow Dye

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