Results 41 to 50 of about 379,518 (254)

Recent Progress in Adipic Acid Synthesis Over Heterogeneous Catalysts

Frontiers in Chemistry, 2020
Adipic acid is one of the most important feedstocks for producing resins, nylons, lubricants, plasticizers. Current industrial petrochemical process, producing adipic acid from KA oil, catalyzed by nitric acid, has a serious pollution to the environment,
Wenjuan Yan, Guangyu Zhang, Jinyao Wang, Mengyuan Liu, Yu Sun, Ziqi Zhou, Wenxiang Zhang, Shuxia Zhang, Xiaoqiang Xu, Jian Shen, Xin Jin   +10 more
doaj   +1 more source

Microbes in Resinous Habitats: A Compilation from Modern and Fossil Resins

, 2010
Amber can be considered as a window into the past allowing insights into the palaeoecology of Mesozoic and Cenozoic woodlands. Insects, spiders, fragments of higher plants and even small vertebrates were trapped by resins of conifers and angiosperms of the ancient “amber forests”.
Beimforde, Christina, Schmidt, Alexander R., Reitner, Joachim, Quéric, Nadia Valérie, Arp, Gernot   +4 more
openaire   +2 more sources

Selective flotation of fossil resin from western coal [PDF]

, 1991
The test program has demonstrated that: (1) technically, the new flotation technologies discovered at the University of Utah and then improved upon by Advanced Processing Technologies, Inc. provide a highly efficient means to selectively recover fossil resin from coal.
Jensen, G. F., Miller, J. D.
openaire   +6 more sources

Interface‐Enhanced Electrochemical Epoxidation Over a Core‐Shell Nanozeolite TS‐1@Mn‐N‐C Catalyst

Advanced Science, EarlyView.
Core–shell interface of TS‐1@Mn‐N‐C enables in situ generation of high‐concentration H2O2 and its spatially confined activation toward epoxidation‐active η‐Ti‐OOH species, leading to highly efficient and continuous electrochemical epoxidation. The work successfully addresses the key challenge of inefficient mass transfer and slow kinetics caused by ...
Wenbiao Zhang, Guanqiao Zhang, Wanling Zhang, Kun Yu, Di Pan, Zhuxin Gui, Yi Tang, Qingsheng Gao   +7 more
wiley   +1 more source

Identification of “black resins” within the Zakhidne Pershe deposit of the Klesivskyi amber-bearing area

Мінеральні ресурси України
During the exploitation of the Zakhidne Pershe amber deposit in the Klesivskyi amber-bearing district, black organic material classified as “black resins” was found among the extracted amber (succinite) in the sediments of the productive Mezhyhirska ...
D. M. Koval, H. O. Kuzmanenko, T. V. Okholina, E. Wagner-Wysiecka, Yu. I. Ladzhun, O. P. Belichenko, O. O. Remezova   +6 more
doaj   +1 more source

Performance and Environmental Impact of Flexible Temperature Sensors on Cellulose‐Based Substrate

Advanced Electronic Materials, EarlyView.
Toward low‐environmental‐impact approach to thin‐film sensors fabrication using natural ingredient‐based triacetyl cellulose (TAC) substrate. Temperature sensors are fabricated and characterized based on thermal and mechanical performance. Substrate recovery is demonstrated by facile dissolution of a Mo‐based sensor in deionized water.
Dianne C. Corsino, Diego Ferri, Claudio Bonizzoni, Marco Affronte, Shuvaraj Ghosh, Stefania Benedetti, Alberto Rota, Antonio Ballestrazzi, Luca Pasquali, Ahmed Rasheed, Luisa Petti, Hafiza Faiqa Maqsood, Niko Münzenrieder, Roberto Rosa, Giuseppe Cantarella   +14 more
wiley   +1 more source

How small changes to methylated piperidinium cations impact the synthesis of zeolite SSZ‐39

AIChE Journal, EarlyView.
Abstract Here we report a synthesis study of SSZ‐39 with four different organic structure directing agents (OSDA). The goal was to determine how subtle changes to the OSDA architecture impact crystallization kinetics, material composition, and other properties.
Onyinyechukwu Ukagha, Daniel F. Shantz
wiley   +1 more source

Evolution of ideas about the origin of fossil resins

Мінеральні ресурси України, 2017
The paper deals with evolution of ideas about the origin of fossil resins as physically and chemically individualized organic compounds – pro­ducts of natural processes in the Earth’s crust, biogenic origin and noncrystalline structure.
M. A. Bogdasarov, H. I. Rudko
doaj  

Transition of plant resins from the biosphere to the lithosphere

Geo&Bio, 2020
In the article the authors consider in detail the process of transition of plant resins from the biosphere to the lithosphere, characterize the conditions and paleogeographic situation of such transition, the formation of deposits of resin minerals and ...
Viktor M. Matsui, Uliana Z. Naumenko
doaj   +1 more source

Glass fibre resin casts of fossils

, 1960
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Rixon, A E, Meade, M J
openaire   +2 more sources