Shaping of ZSM-5-Based Catalysts via Spray Drying: Effect on Methanol-to-Olefins Performance

Shoinkhorova, Tuiana; Dikhtiarenko, Alla; Ramírez, Adrián; Chowdhury, Abhishek Dutta; Çağlayan, Mustafa; Vittenet, Jullian; Bendjeriou‐Sedjerari, Anissa; Ali, Ola S.; Morales-Osorio, Isidoro; Xu, Wei; Gascón, Jorge

doi:10.1021/acsami.9b14082

Cited by 40 publications

(51 citation statements)

References 47 publications

(73 reference statements)

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“…The catalytic performance of the different catalysts is given in Figure 4a and Table 1, along with Tables S.3 and S.4. In line with our previous results on the application of similar composites in the methanol to olefins process (MTO), [17] catalytic activity, expressed as yield to olefins, decreases in the order kaolin > attapulgite > sepiolite > bentonite > talc, with propylene (primarily formed in ZSM‐5) being the dominant product.…”

Section: Resultssupporting

confidence: 90%

“…In fact, the higher coke formation found in the SPL and ATT (Figure 4b) can explain the lowest HTC of 0.3, since the bimolecular hydrogen transfer mechanism requires the presence of free paired acid sites, less available in these more deactivated samples. As we reported earlier, [17] The kaolin formulated composite exposes a higher amount of strong Brønsted acid sites (BAS) compared to formulations incorporating other clays (TLC, BNT, ATT, SPL). Indeed, the presence of movable cations (Ca 2+ /Na + ) in the other fillers, especially in the case of BNT and TLC, leads to the partial deactivation of the zeolite component in the catalyst [4b,16] .…”

Section: Resultsmentioning

confidence: 56%

“…We use the notation TLC (for talc), KAO/SD‐2 (kaolin), BNT (bentonite), ATT (attapulgite), and SPL (sepiolite) according to the clay used. The shaping parameters, as well as specific technicalities related to these composite systems, can be found in our previous work [17] . As specified before, the packing arrangement within the SD embodiments is greatly influenced by the wettability and swelling properties of the clay matrix (Figure S.4).…”

Section: Resultsmentioning

confidence: 92%

“…Right before being spray dried, a composite slurry was homogenized applying a ball milling pre‐treatment at 350 rpm for 30 min with 2 mm ZrO 2 grinding media (20 wt. % relative to the total mass of the slurry) as detailed in our previous work [17] . Afterward, the composite slurry was filtered to remove grinding beads and large agglomerates to prevent clogging of the spraying nozzle.…”

Section: Methodsmentioning

confidence: 99%

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Composition‐performance Relationships in Catalysts Formulation for the Direct Conversion of Crude Oil to Chemicals

et al. 2021

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Maximizing the production of petrochemicals from crude oil at the expense of fuels is among the most important targets for refiners. In this conversion, catalyst composition and formulation play a key role. Here we present a thorough study of the effect of formulated FCC catalyst composition on the one‐step cracking of Arabian light crude oil. Our results demonstrate that over a 35 wt. % yield to light olefins can be achieved on spray‐dried catalysts containing 1 : 1 mixtures of ZSM‐5 and FAU zeolites (alongside binder and clay). Coke deposition and catalyst deactivation can be correlated to the nature and content of each zeolite component.

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Section: Resultssupporting

confidence: 90%

Section: Resultsmentioning

confidence: 56%

Section: Resultsmentioning

confidence: 92%

Section: Methodsmentioning

confidence: 99%

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Composition‐performance Relationships in Catalysts Formulation for the Direct Conversion of Crude Oil to Chemicals

et al. 2021

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“…Among these methods, the tableting method produces the most regularly shaped bodies such as pellets and cylinders, which often have high mechanical strength [6,7]. However, the tableting process is often conducted by trial-and-error approach [8]. The tableting method is often proprietary, and the related patents provided a range of shaping conditions and rarely disclosed any details [9,10].…”

Section: Introductionmentioning

confidence: 99%

Mechanical pressure-mediated Pd active sites formation in NaY zeolite catalysts for indirect oxidative carbonylation of methanol to dimethyl carbonate

Wang

Liu

et al. 2021

Journal of Catalysis

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Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities

2020

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However, due to growing concerns regarding crude oil depletion and increasing environmental requirements, finding abundant fossil hydrocarbons with high H 2 /C ratios as well as alternative carbon resources has become crucial to maintaining sustainable, environmentally benign systems that can aid human development. [2] Thus, one-carbon (C1) chemistry, which is the chemistry of C1 molecules that can be derived from sources other than fossil hydrocarbons, including carbon monoxide (CO), carbon dioxide (CO 2), methane (CH 4), methanol (CH 3 OH), and formic acid (HCOOH), has emerged and plays important roles in the energy supply and high-value chemical preparation. [1,3] These C1 resources can be obtained from natural gas, shale gas, coal, biomass, solid wastes, and CO 2 emissions. [3a,4] Extensive studies have been dedicated to the catalytic conversion of C1 molecules, including production of dimethyl ether (DME) and liquid fuels from syngas (a mixture of CO and H 2); production of methanol, light olefins, and even aromatics from CH 4 ; and production of hydrogen from HCOOH. [5] All of these transformations require metallic catalytic species such as single atoms; clusters; or oxides, carbides, or alloy particles (e.g., Rh-, AuPd-, Fe 3 O 4-, and Fe 5 C 2-based catalysts). However, these isolated metallic species suffer from severe sintering due to a lack of confinement effects from supports, which leads to poor catalytic stability and decreased selectivities toward their target products. The efficient production of a specific range of hydrocarbons or oxygenates remains a difficult scientific and technical challenge. Overcoming product selectivity limitations and improving catalyst stabilities via catalyst designs are important areas of research. Zeolites are an important class of shape-selective catalysts with uniform micropores, tunable acidities, and high thermal and hydrothermal stabilities. Over the past decade, they have gained broad popularity and been applied to various industrially important catalytic processes. [6] In particular, the design and development of zeolite-based mono-, bi-, and multifunctional catalysts that combine the advantages of zeolites with those of metallic catalytic species have boosted the application of zeolites to C1 chemistry. As shown in Figure 1, value-added hydrocarbons and oxygenates can be produced from C1 molecules via various catalytic routes over zeolite-based catalysts. By May of 2020, the Structure Commission of the International C1 chemistry, which is the catalytic transformation of C1 molecules including CO, CO 2 , CH 4 , CH 3 OH, and HCOOH, plays an important role in providing energy and chemical supplies while meeting environmental requirements. Zeolites are highly efficient solid catalysts used in the chemical industry. The design and development of zeolite-based mono-, bi-, and multifunctional catalysts has led to a booming application of zeolite-based catalysts to C1 chemistry. Combining the advantages of zeolites and metallic catalytic species has promoted the catal...

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Shaping of ZSM-5-Based Catalysts via Spray Drying: Effect on Methanol-to-Olefins Performance

Cited by 40 publications

References 47 publications

Composition‐performance Relationships in Catalysts Formulation for the Direct Conversion of Crude Oil to Chemicals

Composition‐performance Relationships in Catalysts Formulation for the Direct Conversion of Crude Oil to Chemicals

Mechanical pressure-mediated Pd active sites formation in NaY zeolite catalysts for indirect oxidative carbonylation of methanol to dimethyl carbonate

Applications of Zeolites to C1 Chemistry: Recent Advances, Challenges, and Opportunities

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