語系:
繁體中文
English
說明(常見問題)
回圖書館首頁
手機版館藏查詢
登入
回首頁
切換:
標籤
|
MARC模式
|
ISBD
Ozonation of Canadian Athabasca asph...
~
The University of Utah.
FindBook
Google Book
Amazon
博客來
Ozonation of Canadian Athabasca asphaltene.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Ozonation of Canadian Athabasca asphaltene./
作者:
Cha, Zhixiong.
面頁冊數:
186 p.
附註:
Source: Dissertation Abstracts International, Volume: 70-03, Section: B, page: 1800.
Contained By:
Dissertation Abstracts International70-03B.
標題:
Energy. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3349468
ISBN:
9781109055559
Ozonation of Canadian Athabasca asphaltene.
Cha, Zhixiong.
Ozonation of Canadian Athabasca asphaltene.
- 186 p.
Source: Dissertation Abstracts International, Volume: 70-03, Section: B, page: 1800.
Thesis (Ph.D.)--The University of Utah, 2009.
Application of ozonation in the petrochemical industry for heavy hydrocarbon upgrading has not been sufficiently explored. Among heavy hydrocarbons, asphaltenes are the heaviest and the most difficult fractions for analysis and treatment. Therefore, ozonation of asphaltenes presents an interesting application in the petrochemical industry.
ISBN: 9781109055559Subjects--Topical Terms:
876794
Energy.
Ozonation of Canadian Athabasca asphaltene.
LDR
:03805nmm 2200301 a 45
001
886674
005
20101007
008
101007s2009 ||||||||||||||||| ||eng d
020
$a
9781109055559
035
$a
(UMI)AAI3349468
035
$a
AAI3349468
040
$a
UMI
$c
UMI
100
1
$a
Cha, Zhixiong.
$3
1058383
245
1 0
$a
Ozonation of Canadian Athabasca asphaltene.
300
$a
186 p.
500
$a
Source: Dissertation Abstracts International, Volume: 70-03, Section: B, page: 1800.
502
$a
Thesis (Ph.D.)--The University of Utah, 2009.
520
$a
Application of ozonation in the petrochemical industry for heavy hydrocarbon upgrading has not been sufficiently explored. Among heavy hydrocarbons, asphaltenes are the heaviest and the most difficult fractions for analysis and treatment. Therefore, ozonation of asphaltenes presents an interesting application in the petrochemical industry.
520
$a
Commercial application of ozonation in the petrochemical industry has three obstacles: availability of an ozone-resistant and environmentally friendly solvent, the precipitation of ozonation intermediates during reaction, and recovery of the solvent and separation of the ozonation products. Preliminary ozonation of Athabasca oil sands asphaltene in nonparticipating solvents encountered serious precipitation of the ozonation intermediates. The precipitated intermediates could be polymeric ozonides and intermolecular ozonides or polymeric peroxides. Because the inhomogeneous reaction medium caused low ozone efficiency, various participating solvents such as methanol and acetic acid were added to form more soluble hydroperoxides. The mass balance results showed that on average, one asphaltene molecule reacted with 12 ozone molecules through the electrophilic reaction and the subsequent decomposition of ozonation intermediates generated acetone extractable products. GC/MS analysis of these compounds indicated that the free radical reactions could be important for generation of volatile products. The extensively ozonated asphaltene in the presence of participating solvents were refluxed with methanol to generate more volatile products. GC/MS analysis of the methanol-esterified ozonation products indicated that most volatile products were aliphatic carboxylic acid esters generated through cleavage of substituents. Reaction kinetics study showed that asphaltene ozonation was initially a diffusion rate-controlled reaction and later developed to a chemical reaction rate-controlled reaction after depletion of the reactive aromatic sites. Two new solvent systems, a self-sustaining ozonation system and a cyclohexane/acetone/water or a cyclohexane/acetone/methanol system, were studied to overcome the drawback of using halogenated solvents. The self-sustaining ozonation process employed the final ozonation products as the reaction solvent. Compared to the self-sustaining ozonation, the cyclohexane solvent system showed higher ozone efficiency; however, it required dynamic adjustment of the solvent system during ozonation.
520
$a
An extensively ozonated asphaltene's weight would be doubled. Distillation of the products separated about 45% volatile products having biodiesel-style chemical structures. Compared to distillation, more than 90% of the ozonation products were extractable by acetone. The remaining acetone-insoluble part was further classified by dichloromethane and other solvents of different polarities. The separated ozonation products were good fuel additives or materials for other products.
590
$a
School code: 0240.
650
4
$a
Energy.
$3
876794
650
4
$a
Engineering, Chemical.
$3
1018531
650
4
$a
Engineering, Environmental.
$3
783782
650
4
$a
Engineering, Petroleum.
$3
1018448
690
$a
0542
690
$a
0765
690
$a
0775
690
$a
0791
710
2
$a
The University of Utah.
$3
1017410
773
0
$t
Dissertation Abstracts International
$g
70-03B.
790
$a
0240
791
$a
Ph.D.
792
$a
2009
856
4 0
$u
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3349468
筆 0 讀者評論
館藏地:
全部
電子資源
出版年:
卷號:
館藏
1 筆 • 頁數 1 •
1
條碼號
典藏地名稱
館藏流通類別
資料類型
索書號
使用類型
借閱狀態
預約狀態
備註欄
附件
W9081976
電子資源
11.線上閱覽_V
電子書
EB W9081976
一般使用(Normal)
在架
0
1 筆 • 頁數 1 •
1
多媒體
評論
新增評論
分享你的心得
Export
取書館
處理中
...
變更密碼
登入