東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Synthesis and Characterization of Su...

Erturk, Kubra Mina.

Linked to FindBook

Google Book

Amazon

博客來

Synthesis and Characterization of Sulfated Heterogeneous Catalyst for Biodiesel Transesterification.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Synthesis and Characterization of Sulfated Heterogeneous Catalyst for Biodiesel Transesterification./
Author:	Erturk, Kubra Mina.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2021,
Description:	85 p.
Notes:	Source: Masters Abstracts International, Volume: 82-11.
Contained By:	Masters Abstracts International82-11.
Subject:	Chemical engineering. -
Online resource:	https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28409864
ISBN:	9798728237686

Synthesis and Characterization of Sulfated Heterogeneous Catalyst for Biodiesel Transesterification.
Erturk, Kubra Mina.

Synthesis and Characterization of Sulfated Heterogeneous Catalyst for Biodiesel Transesterification. - Ann Arbor : ProQuest Dissertations & Theses, 2021 - 85 p.

Source: Masters Abstracts International, Volume: 82-11.

Thesis (M.S.)--University of South Florida, 2021.

This item must not be sold to any third party vendors.

The main objective of this study was to develop and analyze the next generation solid acid catalyst for environmentally friendly production of biodiesel with waste cooking oil. Sulfate-based nano-structured TiO2 catalysts were prepared using sol-gel process from chlorosulfonic acid and sulfuric acid as sulfate precursors. A novel method was developed for in- situ chlorosulfonic acidbased TiO2 preparation with a one-step sol-gel route. As experimentally demonstrated, catalysts with high surface area, nano structured, highly porous structure were obtained.SEM, EDS, XRD, Nitrogen sorption and ATR-FTIR were used for the characterization of the catalysts while biodiesel samples were analyzed with GC-MS. The catalyst performance and structure are shown to be strong function of sol-gel method such as pH and the subsequent calcination temperatures. Catalysts synthesized at higher sol-gel pH and calcined at higher temperatures result in anatase crystalline structure are effective catalysts for Biodiesel production while rutile structures developed at lower pH and afterwards calcined at lower temperatures are not.With the chlorosulfonic acid-based catalysts, higher sulfate content, higher surface area, denser sulfate functionality, more aggregated structures were obtained in comparison to sulfuric acid catalysts. The pore areas with chlorosulfonic precursor resulted in catalysts with BET surface area of 124.9 m2/g while sulfuric acid was 30.123 m2/g. Furthermore, DFT adsorption-desorption method results, pore volume and pore width were determined, 0.213 cm2/g and 7.8 nm, respectively for chlorosulfonic precursers while sulfuric acid resulted in 0.054 cm2/g and 6.8 nm comparatively.Moreover, the chlorosulfonic acid-based catalyst resulted better qualitative results in biodiesel experiments conducted under the same conditions, 80 °C for 3 hours.

ISBN: 9798728237686Subjects--Topical Terms:

560457
Chemical engineering.
Subjects--Index Terms:

Biodiesel transesterification

Synthesis and Characterization of Sulfated Heterogeneous Catalyst for Biodiesel Transesterification.
LDR:02972nmm a2200337 4500 001 2284881
005 20211124093245.5
008 220723s2021 ||||||||||||||||| ||eng d
020 $a 9798728237686
035 $a (MiAaPQ)AAI28409864
035 $a AAI28409864
040 $a MiAaPQ $c MiAaPQ
100 1 $a Erturk, Kubra Mina. $3 3564084
245 1 0 $a Synthesis and Characterization of Sulfated Heterogeneous Catalyst for Biodiesel Transesterification.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2021
300 $a 85 p.
500 $a Source: Masters Abstracts International, Volume: 82-11.
500 $a Advisor: Sunol, Aydin K.
502 $a Thesis (M.S.)--University of South Florida, 2021.
506 $a This item must not be sold to any third party vendors.
520 $a The main objective of this study was to develop and analyze the next generation solid acid catalyst for environmentally friendly production of biodiesel with waste cooking oil. Sulfate-based nano-structured TiO2 catalysts were prepared using sol-gel process from chlorosulfonic acid and sulfuric acid as sulfate precursors. A novel method was developed for in- situ chlorosulfonic acidbased TiO2 preparation with a one-step sol-gel route. As experimentally demonstrated, catalysts with high surface area, nano structured, highly porous structure were obtained.SEM, EDS, XRD, Nitrogen sorption and ATR-FTIR were used for the characterization of the catalysts while biodiesel samples were analyzed with GC-MS. The catalyst performance and structure are shown to be strong function of sol-gel method such as pH and the subsequent calcination temperatures. Catalysts synthesized at higher sol-gel pH and calcined at higher temperatures result in anatase crystalline structure are effective catalysts for Biodiesel production while rutile structures developed at lower pH and afterwards calcined at lower temperatures are not.With the chlorosulfonic acid-based catalysts, higher sulfate content, higher surface area, denser sulfate functionality, more aggregated structures were obtained in comparison to sulfuric acid catalysts. The pore areas with chlorosulfonic precursor resulted in catalysts with BET surface area of 124.9 m2/g while sulfuric acid was 30.123 m2/g. Furthermore, DFT adsorption-desorption method results, pore volume and pore width were determined, 0.213 cm2/g and 7.8 nm, respectively for chlorosulfonic precursers while sulfuric acid resulted in 0.054 cm2/g and 6.8 nm comparatively.Moreover, the chlorosulfonic acid-based catalyst resulted better qualitative results in biodiesel experiments conducted under the same conditions, 80 °C for 3 hours.
590 $a School code: 0206.
650 4 $a Chemical engineering. $3 560457
650 4 $a Organic chemistry. $3 523952
653 $a Biodiesel transesterification
653 $a Synthesis of sulfated heterogeneous catalyst
690 $a 0542
690 $a 0490
690 $a 0363
710 2 $a University of South Florida. $b Chemical Engineering. $3 1685195
773 0 $t Masters Abstracts International $g 82-11.
790 $a 0206
791 $a M.S.
792 $a 2021
793 $a English
856 4 0 $u https://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=28409864