A post-synthesis modification method of molecular sieve 13X for enriching hopanoids in petroleum

Yu Fang; Ling Huang; Yanhua Shuai; Bin Zhang; Honggang Nie; Jin Li; Caiyun Wei; Huajian Wang; Wenlong Zhang

Petroleum Research (Sep 2021)

A post-synthesis modification method of molecular sieve 13X for enriching hopanoids in petroleum

Yu Fang,
Ling Huang,
Yanhua Shuai,
Bin Zhang,
Honggang Nie,
Jin Li,
Caiyun Wei,
Huajian Wang,
Wenlong Zhang

Affiliations

Yu Fang: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China
Ling Huang: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China; Corresponding author.
Yanhua Shuai: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China
Bin Zhang: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China
Honggang Nie: College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, China
Jin Li: Department of Gas Geology, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China
Caiyun Wei: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China
Huajian Wang: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China
Wenlong Zhang: Key Laboratory of Petroleum Geochemistry, Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China

Journal volume & issue: Vol. 6, no. 3
pp. 257 – 263

Abstract

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In this study, alkali/acid treatment and ion exchange post-synthesis modification methods to modify the pore diameter and structure of molecular sieve 13X (MS13X) were applied to obtain products, which could then be implemented to improve the enrichment recovery of hopanoids in petroleum. The modification products were analyzed by SEM with EDS, XRD and nitrogen physisorption. The results indicated that the product which had been prepared in the oxalic acid ethanol solution formed some mesopores, and also retained the initial framework of crystal. It was revealed that this product was able to remarkably increase the recovery rate of hopanoids in petroleum without leading to a significant isotope fractionation phenomenon. It is thus shown that this modification method of non-aqueous oxalic acid solution for MS13X can be used as an effective pretreatment tool in the application of compound-specific isotope analysis of hopanes with low concentration.

Published in Petroleum Research

ISSN: 2096-2495 (Print); 2524-1729 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Chemical technology: Oils, fats, and waxes: Petroleum refining. Petroleum products
Website: https://www.keaipublishing.com/en/journals/petroleum-research/

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