Catalytic two-stage hydrocracking of Arabian vacuum residue at a high conversion level without sludge formation

1990 ◽  
Vol 29 (3) ◽  
pp. 334-337 ◽  
Author(s):  
Isao Mochida ◽  
Xing Zhe Zhao ◽  
Kinya Sakanishi
Keyword(s):  
High Conversion ◽  
Vacuum Residue ◽  
Two Stage ◽  
Sludge Formation ◽  
Conversion Level ◽  
High Conversion Level

Selectivity changes of acetone transformation over ZSM-5 zeolites with different acido-basic properties

1989 ◽  
Vol 54 (8) ◽  
pp. 2054-2063 ◽  
Author(s):  
Jiří Čejka ◽  
Ludmila Kubelková ◽  
Pavel Jírů
Keyword(s):  
Main Product ◽  
High Conversion ◽  
Total Conversion ◽  
Basic Properties ◽  
Product Composition ◽  
Conversion Level ◽  
Integral Reactor ◽  
Low Activity ◽  
High Conversion Level

Acetone transformation catalyzed by HZSM-5 and NaZSM-5 zeolites and by zeolites modified with basic oxides was studied in an integral reactor at a temperature of 350 °C. Modification of acido-basic properties of ZSM-5 zeolites resulted both in the total conversion changes and in the essential changes in the product composition. Isobutene was found to be the main product over HZSM-5 zeolites exhibiting low activity, while aromatics prevailed when high conversion level was attained. Classical condensation of acetone yielding mesityloxide and phorones was observed over NaZSM-5 zeolites impregnated with CaO and ZnO.

Two-stage catalytic up-grading of vacuum residue of a Wandoan coal liquid

Fuel ◽  
1986 ◽  
Vol 65 (8) ◽  
pp. 1090-1093 ◽  
Author(s):  
Isao Mochida ◽  
Kinya Sakanishi ◽  
Yozo Korai ◽  
Hiroshi Fujitsu
Keyword(s):  
Vacuum Residue ◽  
Two Stage

A two-stage preparation of mesophase pitch from the vacuum residue of FCC decant oil

Carbon ◽  
1989 ◽  
Vol 27 (6) ◽  
pp. 925-929 ◽  
Author(s):  
Yang Duk Park ◽  
Isao Mochida
Keyword(s):  
Mesophase Pitch ◽  
Vacuum Residue ◽  
Two Stage

Tin as a Possible Candidate for Solar Thermochemical Redox Process for Hydrogen Production

2009 ◽  
Vol 131 (2) ◽  
Author(s):  
Irina Vishnevetsky ◽  
Michael Epstein
Keyword(s):  
Hydrogen Production ◽  
Water Splitting ◽  
Redox Process ◽  
Experimental Conditions ◽  
Solar Hydrogen ◽  
Conversion Level ◽  
Reactor Temperature ◽  
Solar Hydrogen Production ◽  
Hydrolysis Of ◽  
High Conversion Level

The feasibility to produce hydrogen in the Sn–H2O/SnO2–C thermochemical water splitting redox process depends mainly on the efficiency of the tin hydrolysis step, which has not been studied adequately so far, while the cassererite carboreduction is implemented by industry for tin production. The present work deals with the hydrolysis of different kinds of tin powders at different experimental conditions at moderate temperature range 180–620°C. In spite of the fact that the rate of hydrogen production is lower compared with other metals, e.g., zinc, at the same reactor temperature, high conversion level was obtained in a controllable reaction. Consequently, tin can be a relevant candidate for solar hydrogen production considering the advantage of significant lower temperatures required for the solar carboreduction of its oxide.

scholarly journals Effect of pretreatments on the two-stage hydrogreatment of coal liquid vacuum residue.

1990 ◽  
Vol 69 (4) ◽  
pp. 267-272 ◽  
Author(s):  
Kinya SAKANISHI ◽  
XingZhe ZHAO ◽  
Isao MOCHIDA ◽  
Osamu OKUMA
Keyword(s):  
Vacuum Residue ◽  
Two Stage

Two-stage self-seeding method for preparation of single crystals of poly(phenylene sulfide)

1989 ◽  
Vol 47 ◽  
pp. 368-369
Author(s):  
Sengshiu Chung ◽  
Peggy Cebe
Keyword(s):  
Single Crystals ◽  
High Performance ◽  
Dilute Solution ◽  
Two Stage ◽  
Annealing Behavior ◽  
High Performance Polymers ◽  
Seeding Method ◽  
Phenylene Sulfide

We are studying the crystallization and annealing behavior of high performance polymers, like poly(p-pheny1ene sulfide) PPS, and poly-(etheretherketone), PEEK. Our purpose is to determine whether PPS, which is similar in many ways to PEEK, undergoes reorganization during annealing. In an effort to address the issue of reorganization, we are studying solution grown single crystals of PPS as model materials.Observation of solution grown PPS crystals has been reported. Even from dilute solution, embrionic spherulites and aggregates were formed. We observe that these morphologies result when solutions containing uncrystallized polymer are cooled. To obtain samples of uniform single crystals, we have used two-stage self seeding and solution replacement techniques.

364: Two stage "Progressive Elongation of Spermatic Cord" Technique in Criptorchidism with very short Spermatic Vessels

2007 ◽  
Vol 177 (4S) ◽  
pp. 121-121
Author(s):  
Antonio Dessanti ◽  
Diego Falchetti ◽  
Marco Iannuccelli ◽  
Susanna Milianti ◽  
Gian P. Strusi ◽  
...  
Keyword(s):  
Spermatic Cord ◽  
Two Stage
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