Yujing Liu

4 Questions 8 Answers 0 Followers

Questions related from Yujing Liu

How to avoid swelling effect on measuring skeletal density of soft porous materials?

Hi, I have recently been working on measuring the skeletal density of silica aerogels using helium via a pycnometer. However, the consecutive measurements gave increased results, e.g., 2.2, 2.5,...

15 December 2022 1,841 2 View

Specific surface areas may vary on different machines?

Is there any possibilities that results from N2 physisorption are different from different machines, assuming degassing process is same? I recent had a sample tested on 2 machines, however...

23 August 2021 2,091 1 View

Amorphous silica XRD peak at around 10 degree?

Hello, I recently characterise pure silica aerogels for XRD patterns, and of course they are amophous has a broad peak at around 22°. However there also is a narrow peak at around 9 or 10 degree,...

22 February 2021 3,682 5 View

Why my nitrogen sorption isotherms have a open loop instead of close loop?

Hi I'm carrying out N2 adsorption-desorption for porous sample, but the isotherms I got are open Type IV based on IUPAC rules. They shouldn't be open right? I have read literature about similar...

17 January 2019 6,578 13 View