Catalytic Conversion of Ethanol to Commodity and Specialty Chemicals

Abdulrazzaq, Hussein T.; Schwartz, Thomas J.

doi:10.1016/b978-0-12-811458-2.00001-8

Cited by 16 publications

(17 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These values are comparable with those obtained in the presence of 1 %Ag/Zr 1.3 SiBEA catalyst prepared by post-synthetic incorporation of zirconium into dealuminated BEA zeolite matrix 38. At the same time, the ZnLa-Zr 3 SiBEA catalyst productivity of 1,3-BD formation does not reach the value for ZnLa-Zr 1 SiBEA even with a triple increase in WHSV 1. at WHSV = 2.88 h -1 .…”

supporting

confidence: 82%

Design of Effective Catalysts Based on ZnLaZrSi Oxide Systems for Obtaining 1,3-Butadiene from Aqueous Ethanol

Larina

Shcherban

Kyriienko

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

ZnLaZrSi oxide systems prepared with a silica component of the different nature have been studied in 1,3-butadiene production from aqueous ethanol. The following silica materials were used: KSKG, A-175, A-380, SBA-15, MCM-41, MCM-48, MCF and dealuminated BEA zeolites. The characteristics of the porous structure of the silica support, such as porosity, pore size distribution, specific and external surface areas, were found not to be critical parameters for achieving a high 1,3-butadiene yield during the EtOH-H 2 O mixture conversion in the presence of ZnLaZrSi oxide catalysts. On the contrary, the quantity and strength of Lewis acid sites, which in turn differ depending on the choice of silica material, have a significant impact on 1,3-butadiene selectivity and yield. The highest values of the selectivity of 1,3-butadiene formation (up to 68 %) and yield as well as stability toward deactivation in the presence of H 2 O were achieved over ZnLaZr-KSKG, ZnLaZr-SBA-15 and ZnLa-Zr 1 SiBEA (with mononuclear isolated tetrahedral Zr(IV) species). The productivity of ZnLa-Zr 1 SiBEA catalyst accounts for 0.324 g 1,3-BD •g cat -1 •h -1 (T = 648К, WHSV = 2.88 h -1 , 80 vol% EtOH in water as an EtOH source). The main reason for the decrease in 1,3-butadiene yield in the presence of H 2 O in the reaction mixture was shown to be a deactivation of acetaldehyde condensation sites on the catalyst surface, while the rate of acetaldehyde formation decreases slightly. According to 1 H-13 C CP/MAS NMR spectroscopic results, the use of aqueous ethanol as the feed for ETB-process is very advantage to prevent the carburization of the catalysts.= 2.88 h -1 , 80 vol% EtOH in water as an EtOH source). Therefore, for industrial realization of ETB process the development of the effective catalysts based on dealuminated BEA zeolites is also promising. ASSOCIATED CONTENTSupporting Information. The following file is available free of charge. 29Si and 1 H -29 Si CP MAS NMR spectra of ZnLa-Zr 3 SiBEA sample, SEM images of the ZnLaZrSi samples at three magnifications, the indices of EtOH-water mixture conversion in the presence of ZnLaZrSi oxide systems, the indices of ETB process in the presence of 2 %ZnO/6 %ZrO 2 -KSKG (DOCX).

show abstract

supporting

confidence: 82%

Design of Effective Catalysts Based on ZnLaZrSi Oxide Systems for Obtaining 1,3-Butadiene from Aqueous Ethanol

Larina

Shcherban

Kyriienko

et al. 2020

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Because of the availability of ethanol, which is produced in the 100 s of billions of liters yearly via the fermentation of biomass, it is an attractive renewable feedstock. 1,2 Owing to its convertibility into a wide range of chemical commodities, 3 ethanol is expected to play an increasing role in replacing unsustainable hydrocarbon feedstocks. 4 Sun and Wang, who compiled a list of valuable chemicals obtainable from ethanol, showed that the development of catalytic processes is essential for making ethanol a viable alternative to fossil feedstocks.…”

Section: Introductionmentioning

confidence: 99%

“…13,14 Limitations to the Lebedev process are comparable to that of other ethanol conversion reactions. 2,3 At relevant reaction conditions, the high reactivity of ethanol not only forms the desired butadiene and the intermediate species, but also to large numbers of undesirable byproducts, including coke precursors responsible for catalytic deactivation. 14,15 In addition, low butadiene productivity could hinder the economic viability of the process, 13 but attaining high butadiene space-time yield by increasing the ethanol flow rate was found to coincide with lower selectivity.…”

Section: Introductionmentioning

confidence: 99%

Properties and activity of Zn–Ta-TUD-1 in the Lebedev process

et al. 2020

View full text Add to dashboard Cite

show abstract

“…D-limonene compounds, copaene compounds, and 1,3,3-trimethyltricyclo compounds [2.2.1.0(2,6)] heptane are compounds found in plants; these compounds are thought to have been carried by bees when looking for food from plants and fruits so that the compound this is contained in the propolis content and dissolved in the ethanol byproduct of propolis production. The compound 1-methyl-2-(1-methyl ethyl) benzene is thought to be the result of the decomposition reaction of phenolic acids, which is a type of polyphenol that is widely contained in propolis [6,[28][29][30].…”

Section: Ethanol Recovery From Propolis Production Waste Characteristicmentioning

confidence: 99%

Ethanol Recovery From Propolis Production Waste Using Adsorption Distillation Method

Sahlan¹,

Yulistiono²,

Sasongko³

et al. 2021

Int J App Pharm

View full text Add to dashboard Cite

Objective: This study objective to compare two adsorbents in the ability to recover ethanol in the propolis production by-product. Methods: Research methods include initial identification of the compound content in ethanol by-products of propolis production with GC/MS and determination of ethanol levels by GC-FID. The process of increasing ethanol content is carried out by the adsorption distillation method; the adsorbent used are synthetic zeolite 3A and white silica gel which has activated with the furnace. Results: The result obtained from the study is the initial ethanol content 27.5%. After the ethanol recycle process using synthetic zeolite 3A 30, 60, and 90 grams, it was obtained content 82.3%, 87.1%, and 90.9%. By using 30, 60, and 90 grams silica gel, it was obtained content 72.0%, 79.2%, and 82.2%. Conclusion: Based on these results it can be concluded that the ethanol content of the by-products of propolis production has been successfully increased by the distillation adsorption method with synthetic zeolite 3A 90 grams as the best result. The ethanol which recycling with this formulation has the characteristic odor of ethanol, which is very strong and does not has the characteristic odor of propolis.

show abstract

Catalytic Conversion of Ethanol to Commodity and Specialty Chemicals

Cited by 16 publications

References 75 publications

Design of Effective Catalysts Based on ZnLaZrSi Oxide Systems for Obtaining 1,3-Butadiene from Aqueous Ethanol

Design of Effective Catalysts Based on ZnLaZrSi Oxide Systems for Obtaining 1,3-Butadiene from Aqueous Ethanol

Properties and activity of Zn–Ta-TUD-1 in the Lebedev process

Ethanol Recovery From Propolis Production Waste Using Adsorption Distillation Method

Contact Info

Product

Resources

About