Facile synthesis and superior properties of a nitrogen-rich energetic Zn-MOF with a 2D azide-bridged bilayer structure

Tan, Bojun; Ren, Jia‐Tong; Duan, Binghui; Xu, Minghui; Chen, Xiaoming; Zhang, Heng; Liu, Ning

doi:10.1039/d2dt00789d

Cited by 14 publications

(8 citation statements)

References 52 publications

(88 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, the terminal OH groups of the precursor transformed into energy-rich ONO 2 groups. The high-temperature synthesis promotes the progress of a side process associated with thermolysis of the aminotetrazole ring, leading to the ring-opening and formation of the azido form that occurs when 5-AT and its derivatives are exposed to high temperatures [ 66 , 67 ]. The partial thermolysis progress was evidenced by the presence of an exoeffect during the nitration, the appearance of IR signals in the region typical of azido groups and the small yield of the p-GAT-N product.…”

Section: Resultsmentioning

confidence: 99%

New 5-Aminotetrazole-Based Energetic Polymers: Synthesis, Structure and Properties

et al. 2022

View full text Add to dashboard Cite

An N-glycidyl-5-aminotetrazole homopolymer was synthesized herein by nucleophilic substitution of 5-aminotetrazole heterocycles for chlorine atoms in poly-(epichlorohydrin)-butanediol. Copolymers of N-glycidyl-5-aminotetrazole and glycidyl azide with a varied ratio of energetic elements were synthesized by simultaneously reacting the 5-aminotetrazole sodium salt and the azide ion with the starting polymeric matrix. The 5-aminotetrazole-based homopolymer was nitrated to furnish a polymer whose macromolecule is enriched additionally with energy-rich terminal ONO2 groups and nitrate anions. The structures of the synthesized polymers were characterized by 1H and 13C NMR and IR spectroscopies, elemental analysis and gel-permeation chromatography. The densities were experimentally measured, and thermal stability data were acquired by differential scanning calorimetry. The insertion of aminotetrazole heterocycles into the polymeric chain and their modification via nitration provides an acceptable thermal stability and a considerable enhancement in density and nitrogen content compared to azide homopolymer GAP. By the 1.3-dipolar cycloaddition reaction, we demonstrated the conceptual possibility of preparing spatially branched, energy-rich polymeric binders bearing 5-aminotetrazole and 1,2,3-triazole heterocycles starting from the plasticized azide copolymers. The presence of the aforesaid advantages makes the reported polymers attractive candidates for use as a scaffold of energetic binders.

show abstract

Section: Resultsmentioning

confidence: 99%

New 5-Aminotetrazole-Based Energetic Polymers: Synthesis, Structure and Properties

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Mechanical sensitivity performance is an important safety performance index for energetic materials, and friction sensitivity and impact sensitivity are the two most representative safety performance indexes. In order to evaluate the safety of the ZIF-67 application in propellant formulations, friction sensitivity and impact sensitivity tests were conducted [ 13 ]. In the impact sensitivity test, a hammer with a weight of 2 kg was dropped from a set height onto a sample with a weight of 20 mg at 39.2 MPa.…”

Section: Resultsmentioning

confidence: 99%

“…[PbZn(TATT) 2 (OH)(H 2 O) n ] reduced the decomposition temperature by approximately 25 °C. In 2022, Tan et al [ 13 ] developed a two-dimensional azide bridged energetic metal organic framework material [Zn 2 (atz) 3 (N 3 )] n by coordinating the ligand 5-aminotetrazole(atz) with zinc ions. This complex showed excellent heat resistance (thermal decomposition temperature was 362 °C) and low sensitivity, and it reduced the thermal decomposition temperatures of AP and 2,4,6,8,10,12-hexanitro-2,4,6,8,10,12-hexaazaisowurtzitane (CL-20) by 50 °C and 6 °C, respectively.…”

Section: Introductionmentioning

confidence: 99%

3D Electron-Rich ZIF-67 Coordination Compounds Based on 2-Methylimidazole: Synthesis, Characterization and Effect on Thermal Decomposition of RDX, HMX, CL-20, DAP-4 and AP

Yang¹,

Tan²,

Wang³

et al. 2022

Molecules

Self Cite

View full text Add to dashboard Cite

ZIF-67 is a three-dimensional zeolite imidazole ester framework material with a porous rhombic dodecahedral structure, a large specific surface area and excellent thermal stability. In this paper, the catalytic effect of ZIF-67 on five kinds of energetic materials, including RDX, HMX, CL-20, AP and the new heat-resistant energetic compound DAP-4, was investigated. It was found that when the mass fraction of ZIF-67 was 2%, it showed excellent performance in catalyzing the said compounds. Specifically, ZIF-67 reduced the thermal decomposition peak temperatures of RDX, HMX, CL-20 and DAP-4 by 22.3 °C, 18.8 °C, 4.7 °C and 10.5 °C, respectively. In addition, ZIF-67 lowered the low-temperature and high-temperature thermal decomposition peak temperatures of AP by 27.1 °C and 82.3 °C, respectively. Excitingly, after the addition of ZIF-67, the thermal decomposition temperature of the new heat-resistant high explosive DAP-4 declined by approximately 10.5 °C. In addition, the kinetic parameters of the RDX+ZIF-67, HMX+ZIF-67, CL-20+ZIF-67 and DAP-4+ZIF-67 compounds were analyzed. After the addition of the ZIF-67 catalyst, the activation energy of the four energetic materials decreased, especially HMX+ZIF-67, whose activation energy was approximately 190 kJ·mol−1 lower than that reported previously for HMX. Finally, the catalytic mechanism of ZIF-67 was summarized. ZIF-67 is a potential lead-free, green, insensitive and universal EMOFs-based energetic burning rate catalyst with a bright prospect for application in solid propellants in the future.

show abstract

“…Researchers have always pursued the development of highenergy and environment-protecting solid propellants with good combustion performance and less smoke emissions. In recent years, azole-containing metal organic Frameworks have gained popularity due to their high nitrogen and low carbon content, large gas production per unit of mass, high enthalpy and Zn 2 (atz) 3 (N 3 )] n (Tan et al, 2022).…”

Section: Monometallic Organic Frameworkbased Energetic Burning Rate C...mentioning

confidence: 99%

“…In 2022, B. J. Tan et al (2022) used 5-aminotetrazole (atz) as a ligand to coordinate with zinc ions to obtain a two-dimensional azide-bridged energetic metal-organic frameworks [Zn 2 (atz) 3 (N 3 )] n . This complex can advance the thermal decomposition temperature of AP by about 50°C and the thermal decomposition temperature of hexanitrohexaazaisowurtzitane (CL-20) by about 6°C.…”

Section: Monometallic Organic Framework-based Energetic Burning Rate ...mentioning

confidence: 99%

Research progress of EMOFs-based burning rate catalysts for solid propellants

et al. 2022

View full text Add to dashboard Cite

Energetic Metal Organic Frameworks (EMOFs) have been a hotspot of research on solid propellants in recent years. In this paper, research on the application of EMOFs-based burning rate catalysts in solid propellants was reviewed and the development trend of these catalysts was explored. The catalysts analyzed included monometallic organic frameworks-based energetic burning rate catalysts, bimetallic multifunctional energetic burning rate catalysts, carbon-supported EMOFs burning rate catalysts, and catalysts that can be used in conjunction with EMOFs. The review suggest that monometallic organic frameworks-based burning rate catalysts have relatively simple catalytic effects, and adding metal salts can improve their catalytic effect. Bimetallic multifunctional energetic burning rate catalysts have excellent catalytic performance and the potential for broad application. The investigation of carbon-supported EMOFs burning rate catalysts is still at a preliminary stage, but their preparation and application have become a research focus in the burning rate catalyst field. The application of catalysts that can be compounded with EMOFs should be promoted. Finally, environmental protection, high energy and low sensitivity, nanometerization, multifunctional compounding and solvent-free are proposed as key directions of future research. This study aims to provide a reference for the application of energetic organic burning rate catalysts in solid propellants.

show abstract

Facile synthesis and superior properties of a nitrogen-rich energetic Zn-MOF with a 2D azide-bridged bilayer structure

Abstract: Exploring the facile synthesis of Pb-free energetic metal-organic frameworks (EMOFs) with both high nitrogen content and high thermostability is a significant but challenging task in the field of MOF-based green...

Cited by 14 publications

References 52 publications

New 5-Aminotetrazole-Based Energetic Polymers: Synthesis, Structure and Properties

New 5-Aminotetrazole-Based Energetic Polymers: Synthesis, Structure and Properties

3D Electron-Rich ZIF-67 Coordination Compounds Based on 2-Methylimidazole: Synthesis, Characterization and Effect on Thermal Decomposition of RDX, HMX, CL-20, DAP-4 and AP

Research progress of EMOFs-based burning rate catalysts for solid propellants

Contact Info

Product

Resources

About