Modeling the Selectivity of Hydrotalcite-Based Catalyst in the Propane Dehydrogenation Reaction

丙烷 石脑油 催化作用 脱氢 水滑石 选择性 石油化工 化学工程 丙烯 焦炭 化学 开裂 催化裂化 柴油 材料科学 有机化学 工程类
作者
Giovanni Festa,Palma Contaldo,Marco Martino,Eugenio Meloni,Vincenzo Palma
出处
期刊:Industrial & Engineering Chemistry Research [American Chemical Society]
卷期号:62 (41): 16622-16637 被引量:4
标识
DOI:10.1021/acs.iecr.3c01076
摘要

The propylene production processes currently used in the petrochemical industry (fluid catalytic cracking and steam cracking of naphtha and light diesel) are unable to meet the increase of propylene demand for industrial applications. For this reason, alternative processes for propylene production have been investigated, and among the others, the propane dehydrogenation (PDH) process, allowing the production of propylene as a main product, has been industrially implemented (e.g., Catofin and Oleflex processes). The main drawback of such processes is closely linked to the high temperature required to reach a sustainable propane conversion that affects catalyst stability due to coke formation on the catalyst surface. Accordingly, the periodic regeneration of the catalytic bed is required. In this work, the performance in the PDH reaction of different Sn-Pt catalysts, prepared starting by alumina- and hydrotalcite-based supports, is investigated in terms of propane conversion and selectivity to propylene in order to identify a more stable catalyst than the commercial ones. The experimental tests evidenced that the best performance was obtained using the catalyst prepared on commercial pellets of hydrotalcite PURALOX MG70. This catalyst has shown, under pressure conditions of 1 and 5 bar (in order to evaluate the potential future application in integrated membrane reactors), propane conversion values close to the thermodynamic equilibrium ones in all of the investigated temperature ranges (500-600 °C) and the selectivity was always higher than 95%. So, this catalyst was also tested in a stability run, performed at 500 °C and 5 bar: the results highlighted the loss of only 12% in the propane conversion with no changes in the selectivity to propylene. Properly designed experimental tests have also been performed in order to evaluate the kinetic parameters, and the developed mathematical model has been optimized to effectively describe the system behavior and the catalyst deactivation.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
依灵完成签到,获得积分10
1秒前
香蕉觅云应助7733采纳,获得10
1秒前
4秒前
小猪完成签到,获得积分10
4秒前
6秒前
萌面大侠完成签到,获得积分10
6秒前
6秒前
金枪鱼完成签到,获得积分10
7秒前
sssssssssss完成签到,获得积分10
7秒前
mary发布了新的文献求助10
9秒前
研友_VZG7GZ应助hahaha123213123采纳,获得10
9秒前
枕星发布了新的文献求助10
11秒前
11秒前
12秒前
12秒前
求求大家了完成签到,获得积分10
12秒前
阳光完成签到,获得积分10
12秒前
Crystal完成签到 ,获得积分10
14秒前
15秒前
15秒前
16秒前
16秒前
16秒前
乐乐应助赖道之采纳,获得10
17秒前
17秒前
Sun_Chen完成签到,获得积分10
17秒前
体贴凌柏发布了新的文献求助10
18秒前
成就的笑南完成签到 ,获得积分10
18秒前
19秒前
19秒前
wyw123完成签到,获得积分10
19秒前
求大佬帮助完成签到,获得积分10
19秒前
李健的小迷弟应助zyq采纳,获得10
20秒前
陈隆完成签到,获得积分10
20秒前
哎呀完成签到 ,获得积分10
20秒前
量子星尘发布了新的文献求助10
21秒前
mary完成签到,获得积分10
21秒前
21秒前
朱成豪发布了新的文献求助10
23秒前
deallyxyz应助科研通管家采纳,获得10
23秒前
高分求助中
【提示信息,请勿应助】关于scihub 10000
Les Mantodea de Guyane: Insecta, Polyneoptera [The Mantids of French Guiana] 3000
徐淮辽南地区新元古代叠层石及生物地层 3000
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
Handbook of Industrial Diamonds.Vol2 1100
Global Eyelash Assessment scale (GEA) 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 550
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4038368
求助须知:如何正确求助?哪些是违规求助? 3576068
关于积分的说明 11374313
捐赠科研通 3305780
什么是DOI,文献DOI怎么找? 1819322
邀请新用户注册赠送积分活动 892672
科研通“疑难数据库(出版商)”最低求助积分说明 815029