Which institutions or universities can determine vapor-liquid equilibrium data

As long as you find a university, which should at least be a second-tier one, the library will definitely have them; it just depends on whether you have the time to spend there.

The research group led by Professor Ma Peisheng at Tianjin University can measure gas-liquid equilibrium data!

Thank you! Is there any information available on the related devices, and what is their precision?

Why not try using chemical simulation software?

The research group led by Professor Chen Jizhong from the School of Materials and Chemistry at Zhejiang University should have the relevant equipment

Data on the vapor-liquid equilibrium at 3 yuan is not easy to find; it is recommended to follow these steps: 1. Consult literature: mainly vapor-liquid equilibrium handbooks, which are generally available in the libraries of schools offering chemical engineering programs. Also, check the databases; there are ones like VIP in China, and by looking at other people’s research, you might be lucky enough to find that someone has already done it. 2. It cannot be found in the literature, so one has to do it oneself. Common experimental methods can be found in books on chemical experiments; the experimental equipment is relatively simple, but analytical equipment is essential. 3. Hire universities to do it; basically any institution with a chemistry or chemical engineering program will suffice. It’s best to find them through connections, as if you don’t know anyone, even if you pay them to do the work, the accuracy of the data cannot be guaranteed. In fact, it takes at least a month to do this properly, and errors are likely to occur.

The commonly used systems should be available for reference in the manual. If it is a fine chemical product, it’s difficult to determine the physical property data, so conduct measurements instead

Vapor equilibrium data form the fundamental basis of the chemical engineering field. Every college or university offering programs at the undergraduate level or above in chemical engineering has the relevant experimental equipment, though the pressure levels may vary. Research institutes are also highly specialized in this area. Contact them by phone to confirm the pressure levels as well as the accuracy of the data. Relevant thermodynamic equations can be used to determine the associated parameters. Of course, the cost will depend on the amount of work required. This post was last edited by Albertlu on 2009-2-16 08:22 ]

First, conduct software simulations; then carry out experimental measurements and perform regression analysis for comparison, to ensure the accuracy and reliability of the data

The Tianjin University library has a series of phase equilibrium data manuals – there are over ten of them – along with regression model parameters. One can ask someone to check whether there is data on the specific vapor-liquid equilibrium system needed; it’s in English, and it’s all data, so it should be understandable.

As long as the experimental conditions are available, it’s of course possible to do it by oneself; it’s not very difficult, just time-consuming. To improve accuracy, a large amount of data is required. You might as well give it a try. You can also use Aspen or Pro2 to simulate it.

Contact person: Liu Jibo. Mailing address: No. 82, Jiyuan Road, Shangjie District, Zhengzhou City, Henan Province, Metallurgical Process Simulation and Modeling Institute, Zhengzhou Research Institute of Chalco Co., Ltd., Postal Code: 450041. Phone and fax: 0371-68918053. Email: csujbliu@tom.com or zyy_ljb@chalco.cn

Tian Da Beiyang Equipment Company sells specialized vapor-liquid equilibrium testing equipment with high precision. You can take a look at it on their website at http://www.tdbss.com/

Thank you all for your help. After doing some research, I found that Professor Wang Qi from Zhejiang University and Professor Yun Zhi from Nanjing Tech University are experts in the determination of vapor-liquid equilibrium data under high pressure, and their instruments are quite precise.

The Thermodynamics Group at East China University of Science and Technology can do it; I’ve seen their equipment – it was designed and built by them themselves, at a cost of millions! It is said to have very high precision.

Thank you for your encouragement! I’ll work harder!

Hehe. Our school can also conduct such measurements... We even did experiments in this area during the Chemical Engineering Principles lab course... I’m from Qingdao University of Chemical Technology