Application of Ftir Atr to the Classification of Kerogen-Types,Thermal Maturation and the Evolution of Hydrocarbon Potential of Source Rock.

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Project title

Code/計畫編號

MOST108-2116-M019-002

Translated Name/計畫中文名

油母質類別和成熟度鑑識之紅外光譜分析與源岩生烴潛能評估

Project Coordinator/計畫主持人

Ying-Ju Chang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Institute of Earth Sciences

Website

https://www.grb.gov.tw/search/planDetail?id=13117038

Year

2019

Start date/計畫起

01-08-2019

Expected Completion/計畫迄

31-07-2020

Bugetid/研究經費

870千元

ResearchField/研究領域

地球科學

石油、油母質，琥珀具有不同的化學官能基團。其複雜特異的化學官能基團反應著有機物來源的多樣性，以及歷經漫長地質時間的化學和物理變化。傅立葉紅外光衰減全反射光譜（FTIR-ATR）可量化化學官能團的豐度，是一種靈敏，高分辨率且非破壞性分析。本研究之目的在於鑑識各有機物的光譜特徵和化學結構。結果顯示，油在2960 cm-1,2925 cm-1,2850 cm-1具有強烈的脂肪族CH拉伸振動鍵， FTIR-ATR光譜分析結果與API和瀝青質含量具相關性。本研究亦針對油母質的產油潛能做分析，I型油母質在CH拉伸振動（2925 cm1,2850 cm-1）和C = C拉伸振動（1640 cm-1）中具有很高的吸收波，II型油母質其CH拉伸振動（2925 cm cm-1,2850 cm-1）和C = C拉伸振動（1640 cm-1）的吸光度較低，III型油母質具有較高的產氣潛能，具有最低的CH拉伸振動吸收（2925 cm-1,2850 cm-1），在（1470 cm-1）CH剪切振動中具有顯著的吸收值。在琥珀分析中，具有CH振動（2925 cm-1,2850 cm-1）和CH振動（1470 cm-1）。本研究亦利用碳氫鍵(C-H)、碳碳雙鍵(C=C)與碳氧雙鍵(C=O)等鍵結，定義了Factor(H)、 Factor(O)以及 Factor(C)比值以輔助來源有機物的種類判斷，建立一種快速、高準確度的分析方式。Organic matters, such as oil, coal, kerogen, amber, have different chemical functional groups. The complexity of chemical functional groups derives from the many sources of original contributing organic matter and long-term chemical and physical changes rover geologic time. Fourier Transform Infrared Spectrometer Attenuated total reflectance (FTIRATR) can quantify the abundance of chemical functional groups and is a sensitive, high resolution and nondestructive analytical technique. The aim of this study was to characterize the spectral behavior and chemical structural of organic matters. The results of oil show that FTIR-ATR spectra of oil contain intense aliphatic C-H stretching vibration in 2960 cm-1,2925 cm-1,2850 cm-1 region relative to the C–H (CH3)scissoring vibration at 1380 cm-1 and C=C aromatic ring stretching vibration at 1640cm-1.This FTIR-ATR spectra is consistent with the API and Asphaltene obtained. In this study, we apply FTIR-ATR analyses for evaluating oil potential of kerogens. The results show that kerogen of type I are In FT-IR analysis show highly absorbance in C-H stretching vibration (2925 cm-1,2850 cm-1)and C=C stretching vibration (1640 cm-1 ) and Type II produce oil and gas have the secondary potential, it has lower absorbance of C-H stretching vibration (2925 cm cm-1,2850 cm-1)and C=C stretching vibration (1640 cm-1 ),and in the Type III have the lowest potential of producing oil high potential in producing gas it has the lowest absorbance of C-H stretching vibration (2925 cm-1,2850 cm-1),but have the significant peak in(1470 cm-1)C-H scissoring vibration .In analyzing of amber, similar locality of ambers have similar chemical vibration ratio of C-H vibration (2925 cm-1,2850 cm-1) and C-H (1470 cm-1).

Keyword(s)

全反射傅立葉轉換紅外線光譜
油母質
官能基
鑽石砧
成熟度
FTIR ATR
Kerogen
Functional groups
DAC
Maturity

DSpace CRIS

Application of Ftir Atr to the Classification of Kerogen-Types,Thermal Maturation and the Evolution of Hydrocarbon Potential of Source Rock.

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