PDF Publication Title:
Text from PDF Page: 003
Catalysts 2017, 7, 367 3 of 31 Table 1. Textural properties of ZSM-5 zeolite with special morphology in the references. Catalysts 2017, 7, 367 Z50_10 h 383 71 VTot c Vmic d Vmes e 0.22 [21] f Sample (m2∙g−1) (m2∙g−1) 0.37 0.15 (cm3∙g−1) R Hollow ZSM-5 443 (cm3∙g−1) (cm3∙g−1) Z50_10 h 383 71 105 - 256 - - -- - 358 148 233 0.37 0.15 0.15 0.10 0.34 - - 0.05 0.09 0.13 0.06 0.39 [23] 0.59 [22] - [25] 0.46 [24] - - [25[2]5] 0.35 - [26[2]5] 0.52 0.35 0.78 H-ZSM-5/MCM-41 548 0.49 Hollow ZSM-5 443 0.74 HZM-N(50) 562 0.80 0.46 [24] 0.39 [23] H-ZSM-5/MCM-41 548 0.49 50L-1st 918 0.94 HZM-N(50) 562 0.80 0.940.94 0.400.94 50L5-02Ln-d1st 913 918 HZ50-EL-R2nd 572 913 HZ-ER 572 358 148 233 0.40 0.35 [26] MZAT0.2-PI0.02 @MSA 539 0.61 [27] 0.52 [27] MZAT0.2-PI0.02@MSA 539 0.61 ZSM-5@SAPO-34(6) 474 0.48 [28] 0.35 [28] ZSM-5@SAPO-34(6) 474 0.48 ZSC-24 361 0.84 [29] 0.78 [29] ZSC-24 361 0.84 SBET a Sext b VTot c Vmic d Vmes e 3 of 29 R Sample Table 1. Textural pr2ope−rti1es of ZS2M-5−z1eolite wit3h s−pe1cial mor3pho−lo1gy in th3e re−fe1rences. f (m·g ) (m·g ) (cm·g ) (cm·g ) (cm·g ) SBET a Sext b 105 - 256 - 0.74 0.15 0.10 0.34 - - 0.05 0.09 0.13 0.06 0.59 [22] 0.22 [21] a BET surface area; b External surface area; c Total volume; d Micropore volume; e Mesopore volume; f Reference. a BET surface area; b External surface area; c Total volume; d Micropore volume; e Mesopore volume; f Reference. For hard-template method, polystyrene microsphere and carbon black are widely used as the For hard-template method, polystyrene microsphere and carbon black are widely used as the core to prepare hollow zeolite. However, as large amounts of templates are necessary to serve as core to prepare hollow zeolite. However, as large amounts of templates are necessary to serve as the the core, it is costly and environmentally unfriendly for industrial application to remove these hard core, it is costly and environmentally unfriendly for industrial application to remove these hard templates by burning under air atmosphere and high temperature. For soft-template method, fewer templates by burning under air atmosphere and high temperature. For soft-template method, fewer templates are needed to induce the generation of hollow zeolite compared with hard-template method. templates are needed to induce the generation of hollow zeolite compared with hard-template Jiang et al. [30] prepared hollow ZSM-5 crystals through hydrothermal crystallization method in the method. Jiang et al. [30] prepared hollow ZSM-5 crystals through hydrothermal crystallization presence of polyacrylamide (PAM) as the soft template under the condition of low crystallization method in the presence of polyacrylamide (PAM) as the soft template under the condition of low temperature (120 ◦C) and high PAM concentration. Wang et al. [31] synthesized the hollow microsphere crystallization temperature (120 °C) and high PAM concentration. Wang et al. [31] synthesized the ZSM-5hozlelowlitemtihcrosupghheraedZisSsMo-lu5tizoenol–irtectrhyrsotuagllhizatidoinssporluotcieodnu–recrwysithalltihzaetiaosnsisptraoncceeduorfeorwgiathnotshielanes. ◦ The aamssoisrtpahncoeuosfsoprhgeanriocsailawneass. Tfhoermamedoraptho1u4s0spCherinica1l2whasfifrosrtmlyedinatth14e0p°rCesienn1c2ehofirosrtlgyainotshileanes. presence of organosilanes. Then, nanocrystals were generated when the crystallization time was Then, nanocrystals were generated when the crystallization time was prolonged to 48 h, and they prolonged to 48 h, and they self-assembled on the external surface of the microspheres to form the self-assembled on the external surface of the microspheres to form the core/shell structure. Finally, core/shell structure. Finally, the synthesis gel was recrystallized at 120 °C for 72 h. At this the synthesis gel was recrystallized at 120 ◦C for 72 h. At this temperature, the dissolution rate was temperature, the dissolution rate was higher than the crystallization rate, resulting in hollow higher than the crystallization rate, resulting in hollow structure. The dissolved fragments further structure. The dissolved fragments further recrystallized into the zeolite framework of nanocrystals recrystallized into the zeolite framework of nanocrystals (Figure 1). Pashkova et al. [32] synthesized (Figure 1). Pashkova et al. [32] synthesized hollow ZSM-5 zeolite by self-templating process without hollow ZSM-5 zeolite by self-templating process without the addition of hard or soft template for sphere the addition of hard or soft template for sphere formation or structure-directing agent for zeolite formation or structure-directing agent for zeolite nucleation. By spray-drying the colloidal solution of silicic nucleation. By spray-drying the colloidal solution of silicic acid and aluminum butoxide, the acid anprde-aslhuampeinduamlubmuitnoxsidlieca, tehepprerceu-srshoarpwedasaloubmtaiinoesdi,licwahteicphrecoculrdsoarcwt as obbothaintheed,swhahpiec-hdciroeuctlidngact as both thageesnhtaapned-dsioruerccteinogf asgileicnatandaslouumricneaofforsizliecoaliatendfoarmluamtiiona. Tfohrezseolfl-itemfoprlmatiantgiopnr.oTchesessfeolrf-hteomllopwlating ZSM-5 zeolite preparation is instructive to design zeolite with different morphology. process for hollow ZSM-5 zeolite preparation is instructive to design zeolite with different morphology. Figure 1. Schematic illustration of the structural changes of hollow zeolite spheres during Figure 1. Schematic illustration of the structural changes of hollow zeolite spheres during crystallization crystallization procedure [31]. Copyright Elsevier, 2013. procedure [31]. Copyright Elsevier, 2013.PDF Image | Strategies to Enhance the Catalytic Performance of ZSM-5
PDF Search Title:
Strategies to Enhance the Catalytic Performance of ZSM-5Original File Name Searched:
catalysts-07-00367.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |