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Selective epoxidation of linear terminal olefins with metalloporphyrins under mild conditions

Xiaoguang BAI, Yuanbin SHE

Frontiers of Chemical Science and Engineering 2009, Volume 3, Issue 3,   Pages 310-313 doi: 10.1007/s11705-009-0168-7

Abstract: The epoxidation of linear terminal olefins with metalloporphyrins in the presence of dioxygen and isobutyraldehydeThe results show that all olefins could be smoothly converted to epoxides with high selectivities (70%

Keywords： metalloporphyrins     olefins     dioxygen     epoxidation    

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Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 76-89 doi: 10.1007/s11705-016-1557-3

Abstract: , containing 8-rings as the largest, are widely employed as catalysts in the process of methanol-to-olefinsSmall pore zeolites and silicon-aluminophosphates(SAPOs) containing cavities, where olefins are mainly

Keywords： small pore zeolites     SAPOs     methanol-to-olefins     hydrocarbon pool mechanism     alkylation of polymethylbenzenes    

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Light olefins synthesis from С

Anton SHALYGIN, Evgenii PAUKSHTIS, Evgenii KOVALYOV, Bair BAL’ZHINIMAEV

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 3,   Pages 279-288 doi: 10.1007/s11705-013-1338-1

Abstract: A two-step process was employed to convert methane or ethane to light olefins via the formation of an

Keywords： oxychlorination     methane     ethane     light olefins     ruthenium catalyst    

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Benzene alkylation with long chain olefins catalyzed by ionic liquids: a review

QIAO Congzhen, CAI Yonghong, GUO Quanhui

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 346-352 doi: 10.1007/s11705-008-0045-9

Abstract: The introduction of ionic liquids to alkylation process gives a choice for “green production” in the petrochemical and detergent industry. A lot of papers and patents have been published using chloroaluminate ionic liquid as a novel catalyst for alkylation with high reactivity and easy separation from reactants. These included the acidity, characterization, determination and catalysis technologies in batch and continuous operation mode for different scales. According to published data and several results of pilot alkylation,including the authors’ experience,the prospect of chloroaluminate ionic liquids for commercials was also discussed. It has been pointed out that there still are many difficulties and challenges to be overcome for commercial application of the ionic liquid catalyst.

Keywords： different     petrochemical     characterization     introduction     chloroaluminate    

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Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 1,   Pages 69-73 doi: 10.1007/s11705-008-0014-3

Abstract: small experimental setup,the continuous reaction performances of benzene alkylation with long chain olefinsstatic mixing reactor (reagent materials) and normal continuous alkylation using industrial paraffin and olefinsThe refined industrial olefins as raw material could meet with the requirements of continuous alkylationThe influences of impurities such as di-olefins and non-benzene aromatics on the catalytic activity and

Keywords： stability     different     hypecritical     compulsive mixing-reacting-separating-recycling     non-benzene    

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Effect of temperature in the conversion of methanol to olefins (MTO) using an extruded SAPO-34 catalyst

Ignacio Jorge Castellanos-Beltran, Gnouyaro Palla Assima, Jean-Michel Lavoie

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 2,   Pages 226-238 doi: 10.1007/s11705-018-1709-8

Abstract: The methanol-to-olefin (MTO) reaction was investigated in a bench-scale, fixed-bed reactor using an extruded catalyst composed of a commercial SAPO-34 (65 weight percentage, wt-%) embedded in an amorphous SiO matrix (35 wt-%). The texture properties, acidity and crystal structure of the pure SAPO-34 and its extruded form (E-SAPO-34) were analyzed and results indicated that the extrusion step did not affect the properties of the catalyst. Subsequently, E-SAPO-34 was tested in a temperature range between 300 and 500 °C, using an aqueous methanol mixture (80 wt-% water content) fed at a weight hour space velocity (WHSV) of 1.21 h . At 300 °C, a low conversion was observed combined with catalyst deactivation, which was ascribed to oligomerization and condensation reactions. The coke analysis showed the presence of diamandoid hydrocarbons, which are known to be inactive molecules in the MTO process. At higher temperatures, a quasi-steady state was reached during a 6 h reaction where the optimal temperature was identified at 450 °C, which incidentally led to the lowest coke deposition combined with the highest H/C ratio. Above 450 °C, surges of ethylene and methane were associated to a combination of H-transfer and protolytic cracking reactions. Finally, the present work underscored the convenience of the extrusion technique for testing catalysts at simulated scale-up conditions.

Keywords： MTO     SAPO-34     temperature     extrusion     coke     light alkanes    

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Targeted Catalytic Cracking to Olefins (TCO): Reaction Mechanism, Production Scheme, and Process Perspectives Review

Youhao Xu, Yanfen Zuo, Wenjie Yang, Xingtian Shu, Wei Chen, Anmin Zheng

Engineering 2023, Volume 30, Issue 11,   Pages 100-109 doi: 10.1016/j.eng.2023.02.018

Abstract:

Light olefins are important organic building blocks in the chemicals industry.To maximize the production of light olefins and reduce carbon emissions, the perceived benefits of variousconversion as a link to expand upstream and downstream processes, a targeted catalytic cracking to olefins

Keywords： Light olefins     Steam cracking     Catalytic cracking     TCO process     Oil processing revolution    

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surfactant-assisted synthesis of mesoporous SSZ-39 zeolite with enhanced catalytic performance in the methanol-to-olefins

Hao Xu, Chi Lei, Qinming Wu, Qiuyan Zhu, Xiangju Meng, Daniel Dai, Stefan Maurer, Andrei-Nicolae Parvulescu, Ulrich Müller, Fengshou Xiao

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 2,   Pages 267-274 doi: 10.1007/s11705-019-1845-9

Abstract: SSZ-39 zeolite with AEI framework structure is a good catalyst candidate for the methanol-to-olefins

Keywords： SSZ-39 zeolite     mesopores     organosilane surfactant     MTO reaction     soft template     mass transfer    

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DMTO: A Sustainable Methanol-to-Olefins Technology

Mao Ye, Peng Tian, Zhongmin Liu

Engineering 2021, Volume 7, Issue 1,   Pages 17-21 doi: 10.1016/j.eng.2020.12.001

Keywords： EngineeringAchievements    

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Anylysis on Carbon Emission Based on the Life Cycle of New Coal Chemical Industry

Wu Juanni,Zhang Yueling,Tian Yajun and Xie Kechang

Strategic Study of CAE 2015, Volume 17, Issue 9,   Pages 69-74

Abstract: Life Cycle Assessment method is used to calculate the current and potential CO2 emission of coal to olefins

Keywords： coal to olefins     direct coal to liquid     indirect coal to liquid     coal to synthetic natural gas     life    

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Ethylene Copolymerization with Linear and End-Cyclized Olefins via a Metallocene Catalyst: Polymerization Letter

Changjiang Wu, Minqiao Ren, Liping Hou, Shuzhang Qu, Xinwei Li, Cui Zheng, Jian Chen, Wei Wang

Engineering 2023, Volume 30, Issue 11,   Pages 93-99 doi: 10.1016/j.eng.2023.07.001

Abstract: In this work, copolymers of ethylene with linear and end-cyclized α-olefins are synthesized usingThe copolymerization of ethylene with linear α-olefins results in a higher turn-over frequencythat end-cyclized α-olefins have a higher coordination probability and lower insertion rate.End-cyclized α-olefins exhibit a much stronger crystallization destructive capacity (CDC) in thecopolymer than linear α-olefins, possibly because linear α-olefins act mainly in the radial

Keywords： Metallocene catalyst     Ethylene copolymerization     Comonomer distribution     Crystallization destructive capacity    

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Efficient Splitting of Trans-/Cis-Olefins Using an Anion-Pillared Ultramicroporous Metal-Organic Framework

Zhaoqiang Zhang, Xili Cui, Xiao-Ming Jiang, Qi Ding, Jiyu Cui, Yuanbin Zhang, Youssef Belmabkhout, Karim Adil, Mohamed Eddaoudi, Huabin Xing

Engineering 2022, Volume 11, Issue 4,   Pages 82-88 doi: 10.1016/j.eng.2021.10.013

Abstract:

Trans-/cis-olefin isomers play a vital role in the petrochemical industry. The paucity of energy-efficient technologies for their splitting is mainly due to the similarities of their physicochemical properties. Herein, two new tailor-made anion-pillared ultramicroporous metal–organic frameworks (MOFs), ZU-36-Ni and ZU-36-Fe (GeFSIX-3-Ni and GeFSIX-3-Fe) are reported for the first time for the efficient trans-/cis-2-butene (trans-/cis-C4H8) mixture splitting by enhanced molecular exclusion. Notably, ZU-36-Ni unexpectedly exhibited smart guest-adaptive pore channels for trapping trans-C4H8 with a remarkable adsorption capacity (2.45 mmol∙g−1) while effectively rejecting cis-C4H8 with a high purity of 99.99%. The dispersion-corrected density functional theory (DFT-D) calculation suggested that the guest-adaptive behavior of ZU-36-Ni in response to trans-C4H8 is derived from the organic linker rotation and the optimal pore dimensions, which not only improve the favorable adsorption/diffusion of trans-C4H8 with optimal host–guest interactions, but also enhance the size-exclusion of cis-C4H8. This work opens a new avenue for pore engineering in advanced smart or adaptive porous materials for specific applications involving guest molecular recognition.

Keywords： Adsorption and separation     trans     -/     cis     -butene     Ultramicroporous metal–organic frameworks     Pore engineering     Guest-adaptive    

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Title Author Date Type Operation

Selective epoxidation of linear terminal olefins with metalloporphyrins under mild conditions

Xiaoguang BAI, Yuanbin SHE

Journal Article

Confinement effects in methanol to olefins catalysed by zeolites: A computational review

German Sastre

Journal Article

Light olefins synthesis from С

Anton SHALYGIN, Evgenii PAUKSHTIS, Evgenii KOVALYOV, Bair BAL’ZHINIMAEV

Journal Article

Benzene alkylation with long chain olefins catalyzed by ionic liquids: a review

QIAO Congzhen, CAI Yonghong, GUO Quanhui

Journal Article

Continuous reaction performances of benzene alkylation with long chain olefins catalyzed by ionic liquid

QIAO Congzhen, LI Chengyue

Journal Article

Effect of temperature in the conversion of methanol to olefins (MTO) using an extruded SAPO-34 catalyst

Ignacio Jorge Castellanos-Beltran, Gnouyaro Palla Assima, Jean-Michel Lavoie

Journal Article

Targeted Catalytic Cracking to Olefins (TCO): Reaction Mechanism, Production Scheme, and Process Perspectives

Youhao Xu, Yanfen Zuo, Wenjie Yang, Xingtian Shu, Wei Chen, Anmin Zheng

Journal Article

surfactant-assisted synthesis of mesoporous SSZ-39 zeolite with enhanced catalytic performance in the methanol-to-olefins

Hao Xu, Chi Lei, Qinming Wu, Qiuyan Zhu, Xiangju Meng, Daniel Dai, Stefan Maurer, Andrei-Nicolae Parvulescu, Ulrich Müller, Fengshou Xiao

Journal Article

DMTO: A Sustainable Methanol-to-Olefins Technology

Mao Ye, Peng Tian, Zhongmin Liu

Journal Article

Anylysis on Carbon Emission Based on the Life Cycle of New Coal Chemical Industry

Wu Juanni,Zhang Yueling,Tian Yajun and Xie Kechang

Journal Article

Ethylene Copolymerization with Linear and End-Cyclized Olefins via a Metallocene Catalyst: Polymerization

Changjiang Wu, Minqiao Ren, Liping Hou, Shuzhang Qu, Xinwei Li, Cui Zheng, Jian Chen, Wei Wang

Journal Article

Efficient Splitting of Trans-/Cis-Olefins Using an Anion-Pillared Ultramicroporous Metal-Organic Framework

Zhaoqiang Zhang, Xili Cui, Xiao-Ming Jiang, Qi Ding, Jiyu Cui, Yuanbin Zhang, Youssef Belmabkhout, Karim Adil, Mohamed Eddaoudi, Huabin Xing

Journal Article