Triethylammonium hydrogen sulfate

Name: Triethylammonium hydrogen sulfate
SKU: ACM54272296
Rating: 5 (1 reviews)

CAS

54272-29-6

Catalog Number

ACM54272296

Category

Other Products

Molecular Weight

199.268480 [g/mol]

Molecular Formula

C6H17NO4S

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Specification

Synonyms

Triethylammonium sulfate; Ethanamine,N,N-diethyl-,sulfate (1:?); Triethylammonium hydrogen sulphate; [TEA][HSO4]; [Et3NH][HSO4]; EINECS 259-057-7; N-triethylammonium hydrogen sulfate; Ethanamine,N,N-diethyl-,sulfate;

IUPAC Name

N,N-diethylethanamine; sulfuric acid

Canonical SMILES

CCN(CC)CC.OS(=O)(=O)O

InChI Key

JNONJXMVMJSMTC-UHFFFAOYSA-N

Boiling Point

90.5ºC at 760mmHg

Melting Point

-114.7ºC

Density

0.75g/cm³

EC Number

259-057-7

Exact Mass

199.08800

H-Bond Acceptor

H-Bond Donor

Safety Description

26-36/37/39-45

Delignification of corn stover with triethylammonium bisulfate

Glucose release after 7 days of enzymatic saccharification from Miscanthus pulp after pretreatment at several temperatures and times with [TEA][HSO4].

Rauf, Abdul, Amir Shafeeq, and Khurram Shahzad. Chemical Engineering & Technology 45.6 (2022): 1106-1113.

The use of low-cost ionic liquids is a promising approach for pretreatment of lignocellulosic biomass for the production of renewable fuels, materials, and chemicals. A process intensification strategy for ionoSolv pretreatment of Miscanthus sinensis with the low-cost ionic liquid triethylammonium bisulfate ([TEA][HSO4]) in the presence of 20 wt% water was investigated using high temperature and high solid solvent loading 1:5 g/g. The temperatures investigated were 150, 160, 170, and 180 °C. The effects of pretreatment temperature on lignin and hemicellulose removal, cellulose degradation, and enzymatic saccharification yields were discussed. Very good fractionation was achieved at all investigated temperatures, including an enzymatic saccharification yield exceeding 75% of the theoretical maximum after only 15 min of treatment at 180 °C. The recovered lignin was further characterized, identifying some tunability in the hydroxyl content, subunit composition, connectivity, and molecular weight distribution of the isolated lignin while maintaining maximum saccharification yield.
Pretreatment, oven-dry weight determination and ionic liquid water content measurements were performed according to the standard operating procedures of our laboratory. 8 g of triethylammonium hydrogen sulfate and 2 g of water were used as solvents and 2 g of Miscanthus sinensis (on an oven-dry basis) as biomass, corresponding to a biomass to solvent ratio of 1:5 g/g. For both native biomass and recycled pulp, the moisture content was determined according to the NREL protocol "Determination of Total Solids in Biomass and Total Dissolved Solids in Liquid Process Samples" by weighing out approximately 100 mg of biomass/pulp onto a pre-weighed piece of aluminum foil. The weight was recorded using an analytical balance. The foil with biomass/pulp was folded and oven-dried (T = 105 °C) overnight. The hot pack was placed in a desiccator to cool to room temperature. The weight was recorded immediately and the moisture content was calculated. Three replicates were performed for untreated biomass and once for recycled pulp per sample.

Effective Pretreatment of Heavy Metal Contaminated Biomass Using Triethylammonium Hydrogen Sulfate:

Compositional analysis of original raw and IL-pretreated HMCB recovered after pretreatment using [TEA][HSO4] under different operating conditions

Dastyar, Wafa, et al. ACS Sustainable Chemistry & Engineering 7.13 (2019): 11571-11581.

The feasibility of pretreatment of heavy metal-contaminated biomasses (HMCBs) harvested from willow trees demonstrated the use of low-cost triethylammonium hydrogen sulfate ([TEA][HSO4]) for effective removal of contaminated land. According to the results, extensive biomass fractionation and strong removal of HMs from the target HMCB depended on the operating conditions. The ANOVA table confirmed the consistency between the experimental results and the relevant data. The obtained model showed a high effect of IL:biomass ratio parameters on biomass fractionation and heavy metal removal efficiency, compared with temperature and time. Based on the maximum removal of HM (response), the optimal operating conditions determined by RSM-BBD were as follows: temperature 93°C, IL:biomass ratio 30:1, and time 7.12 hours. Under the optimum conditions, IL was dissolved to 70.54% lignin and 92.56% hemicellulose, thus highly deionizing the heavy metal accumulated stem sample (Cu 100%, Zn 88.77%, Mn 79.70%, Fe 73.11%, Cd 70.42%, Al 34.53%, Cr 18.17%, while Pb removal was negligible). The final IL recovery of 97% from the process (under the optimum conditions) highlights the possibility of considering this effective and cost-efficient pretreatment approach for scale-up of HMCB pretreatment and its valorization into various biofuels and value-added products by thermochemical and thermochemical methods.
Washing out with ethanol Cleaning and separation of fractions using centrifuge and Soxhlet extraction equipment in two stages
Isolation of the part of the woody biomass, namely the carbohydrate-rich material (literally pulp). In the end of each cycle, the recovery of hemicellulose and lignin as well as precipitation can be achieved by adding some appropriate anti-solvent (acidic or alkaline substrate).