Thomas Nicol

10 Questions 36 Answers 0 Followers

Questions related from Thomas Nicol

Is liquid phase candle filtration of bio-oil feasible?

I have seen indications of the use of candle filters and bed filters for hot vapour filtration of bio-oil, but never liquid phase. Is this solely due to viscosity and fouling or is additional...

11 December 2023 4,210 3 View

How does counter ion loss occur in ligand exchange columns, such as Aminex and Hiplex?

I am aware of the phenomena of counter ion loss in ligand exchange columns within HPLC. Due to this phenomena, contamination by anions, cations and salts can be problematic for a column. We use...

28 March 2023 7,444 2 View

What method should be used for sample pH adjustment for Biorad Aminex columns (HPX-42A)?

I am currently developing my SOP for sample injection into our soon-to-arrive Biorad Aminex HPX-42A column. The plan is to use HPLC grade water at 85°C for eluent. Based on the "Use and Care"...

27 March 2023 8,366 2 View

How does one calculate the number of active sites in a beta hydrogen zeolite?

The solid acid properties of aluminosilicates are well know. My question is: how are the number of active sites calculated in such zeolites? Does it require simulation? Can it be estimated from...

04 April 2022 1,933 3 View

Is the free energy of solid or crystal phases undefined?

26 November 2019 8,030 7 View

Question Redacted by former employer?

26 November 2019 2,395 6 View

Is there a metric to define the point at which a salt solution becomes "dilute"?

Dilute solutions are mentioned everywhere in electrolyte and hydrophobicity literature. However, I have been unable to find an example of a quantitative metric that measures the point at which a...

24 January 2019 489 3 View

In the gelatinization of starch, what is the approximate proportion of starch that leaches into solution?

Amylose leaching is often cited as one of the stages of gelatinization. I am unaware, however, of the extent to which this leaching occurs. Is there a source anywhere examining what proportion...

18 April 2018 7,000 3 View

Cellulose and Hydrophobicity theory - have you carried out work into this topic?

Dear all, I am carrying out a literature survey of papers in which cellulose is analysed in terms of its hydrophobicity and wanted to ensure that I have not neglected any group's contributions....

01 January 1970 8,589 1 View

What is the most impactful strategy for reducing transport emissions?

In your opinion, should we target Biodiesel, Hybrid Vehicles, Sustainable Aviation Fuel, Electric Vehicles or some combination of these? Do you agree with your country's approach to this...

01 January 1970 9,323 28 View