Bifunctional imidazole‐PTSA deep eutectic solvent for synthesizing long‐chain ester IBIBE in reactive extraction

AIChE Journal ◽  
2018 ◽  
Author(s):  
Hao Qin ◽  
Zhen Song ◽  
Qian Zeng ◽  
Hongye Cheng ◽  
Lifang Chen ◽  
...  
Keyword(s):  
Deep Eutectic Solvent ◽  
Reactive Extraction ◽  
Long Chain ◽  
Chain Ester

Miscibility and thermal behavior of poly (ɛ-caprolactone)/long-chain ester of cellulose blends

2012 ◽  
Vol 88 (2) ◽  
pp. 422-427 ◽  
Author(s):  
Yuzhi Xu ◽  
Chunpeng Wang ◽  
Nicole M. Stark ◽  
Zhiyong Cai ◽  
Fuxiang Chu
Keyword(s):  
Thermal Behavior ◽  
Long Chain ◽  
Chain Ester

scholarly journals Síntese de éster de cadeia longa via catálise básica heterogênea (Synthesis of long chain ester by heterogeneous base catalysis)

2018 ◽  
Vol 34 (2) ◽  
pp. 49
Author(s):  
Dorsan Dos Santos Moraes ◽  
G. N. R. Filho ◽  
José Roberto Zamian
Keyword(s):  
Thermal Decomposition ◽  
Magnesium Oxide ◽  
Structural Properties ◽  
Methyl Palmitate ◽  
Base Catalysis ◽  
Chain Alcohol ◽  
Long Chain Alcohol ◽  
Heterogeneous Base ◽  
Long Chain ◽  
Chain Ester

A long chain ester was prepared by transesterification of methyl palmitate with long chain alcohol using magnesium oxide as catalyst prepared by thermal decomposition of different precursors with the intention of establish relations among structural properties and activities. Temperature and catalyst amounts were modified in order to evaluate the yield of the ester in function the precursors used in preparation of the oxide.

Incorporation of bromo-octadecane into long-chain ester monolayers at the air/water interface

2001 ◽  
Vol 78 (5) ◽  
pp. 503-507
Author(s):  
Geetha Baskar ◽  
A. M. Shanmugharaj ◽  
S. Venkatesh ◽  
A. B. Mandal
Keyword(s):  
Water Interface ◽  
Air Water Interface ◽  
Long Chain ◽  
Chain Ester

Phase equilibria of (methane-long chain ester cuts) systems in drilling conditions

2002 ◽  
Vol 194-197 ◽  
pp. 831-846 ◽  
Author(s):  
Nathalie Bureau ◽  
Denis Defiolle ◽  
Jean-Charles de Hemptinne
Keyword(s):  
Phase Equilibria ◽  
Drilling Conditions ◽  
Long Chain ◽  
Chain Ester

Wettability, Surface Morphology, and Stability of Long-Chain Ester Multilayers Obtained by Different Langmuir-Blodgett Deposition Types

1994 ◽  
Vol 98 (27) ◽  
pp. 6790-6796 ◽  
Author(s):  
A. Angelova ◽  
F. Penacorada ◽  
B. Stiller ◽  
T. Zetzsche ◽  
R. Ionov ◽  
...  
Keyword(s):  
Surface Morphology ◽  
Langmuir Blodgett ◽  
Long Chain ◽  
Chain Ester

Flavonoid Glycoside and Long Chain Ester from the Roots of Vitex negundo

ChemInform ◽  
2005 ◽  
Vol 36 (9) ◽  
Author(s):  
Azhar-ul-Haq Azhar-ul-Haq ◽  
A. Malik ◽  
S. B. Khan
Keyword(s):  
Flavonoid Glycoside ◽  
Vitex Negundo ◽  
Long Chain ◽  
Chain Ester

scholarly journals Performance Evaluation and Site Application of a Hydrophobic Long-Chain Ester-Based CO2 Fracturing Fluid Thickener

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Jianqiang Lu ◽  
Meilong Fu ◽  
Liu Xu ◽  
Qian Huang ◽  
Yan Zheng
Keyword(s):  
Carrying Capacity ◽  
Fluid Viscosity ◽  
The Novel ◽  
Fracturing Fluid ◽  
Frictional Drag ◽  
Core Damage ◽  
Reduction Efficiency ◽  
Settling Speed ◽  
Long Chain ◽  
Chain Ester

Nowadays, there are a wide variety of thickeners developed for dry CO2 fracturing worldwide, but numerous problems remain during in situ testing. To address problems in CO2 fracturing fluid operation (high frictional drag, low viscosity, low proppant-carrying capacity, narrow reservoir fractures, etc.), the authors have synthesized the novel hydrophobic long-chain ester thickener, studied viscosity, frictional drag, and proppant-carrying capacity of CO2 fracturing fluid and core damage by CO2 fracturing fluid by varying the temperature, pressure, and level of injection of the novel thickener and explored the thickening mechanism for this thickener in CO2. Based on the study results, as the temperature, pressure, and amount of injected thickener increased, fracturing fluid viscosity increased steadily. In the case of shearing for 125 min under conditions of 170 S−1, 40°C, and 20 MPa, when the thickener level increased from 1% to 2%, fracturing fluid viscosity increased and then decreased, varying within 50–150 mPa·s, and the viscosity-enhancing effect was evident; under conditions of 20°C and 12 MPa, as the flow rate increased, drag reduction efficiency reached 78.3% and the minimal proppant settling speed was 0.09 m/s; under conditions of 40°C and 20 MPa, drag reduction efficiency reached 77.4% and the proppant settling speed was 0.08 m/s; with the increases in temperature, pressure, and injection amount, core damage rates of the thickener varied within 1.77%–2.88%, indicating that basically no damage occurred. This study is of significant importance to the development of CO2 viscosity enhancers and CO2 fracturing operation.

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